Update documentation

.editorconfig

@@ -8,7 +8,3 @@ insert_final_newline = true
 indent_size = 2
 indent_style = space
 trim_trailing_whitespace = true
-
-[*.md]
-indent_size = 4
-indent_style = tab

CODE_OF_CONDUCT.md

@@ -0,0 +1,3 @@
+# Code of Conduct
+
+By contributing to and participating in the development of indieweb-endpoints-ruby, you acknowledge that you have read and agree to the [IndieWeb Code of Conduct](https://indieweb.org/code-of-conduct).

CONTRIBUTING.md

@@ -2,15 +2,15 @@
 
 There are a couple ways you can help improve webmention-client-ruby:
 
-1. Fix an existing [issue][issues] and submit a [pull request][pulls].
-1. Review open [pull requests][pulls].
-1. Report a new [issue][issues]. _Only do this after you've made sure the behavior or problem you're observing isn't already documented in an open issue._
+1. Fix an existing [Issue][issues] and submit a [Pull Request][pulls].
+1. Review open [Pull Requests][pulls].
+1. Report a new [Issue][issues]. _Only do this after you've made sure the behavior or problem you're observing isn't already documented in an open issue._
 
 ## Getting Started
 
-webmention-client-ruby is developed using Ruby 2.7.7 and is additionally tested against Ruby 3.0, 3.1, and 3.2 using [GitHub Actions](https://github.com/indieweb/webmention-client-ruby/actions).
+webmention-client-ruby is developed using Ruby 2.7.8 and is tested against additional Ruby versions using [GitHub Actions](https://github.com/indieweb/webmention-client-ruby/actions).
 
-Before making changes to webmention-client-ruby, you'll want to install Ruby 2.7.7. It's recommended that you use a Ruby version managment tool like [rbenv](https://github.com/rbenv/rbenv), [chruby](https://github.com/postmodern/chruby), or [rvm](https://github.com/rvm/rvm). Once you've installed Ruby 2.7.7 using your method of choice, install the project's gems by running:
+Before making changes to webmention-client-ruby, you'll want to install Ruby 2.7.8. Using a Ruby version managment tool like [rbenv](https://github.com/rbenv/rbenv), [chruby](https://github.com/postmodern/chruby), or [rvm](https://github.com/rvm/rvm) is recommended. Once you've installed Ruby 2.7.8 using your method of choice, install the project's gems by running:
 
 ```sh
 bundle install
@@ -25,11 +25,11 @@ bundle install
 1. If your changes would benefit from testing, add the necessary tests and verify everything passes by running `bundle exec rspec`.
 1. Commit your changes: `git commit -am 'Add some new feature or fix some issue'`. _(See [this excellent article](https://chris.beams.io/posts/git-commit/) for tips on writing useful Git commit messages.)_
 1. Push the branch to your fork: `git push -u origin my-new-feature`.
-1. Create a new [pull request][pulls] and we'll review your changes.
+1. Create a new [Pull Request][pulls] and we'll review your changes.
 
 ## Code Style
 
-Code formatting conventions are defined in the `.editorconfig` file which uses the [EditorConfig](http://editorconfig.org) syntax. There are [plugins for a variety of editors](http://editorconfig.org/#download) that utilize the settings in the `.editorconfig` file. We recommended you install the EditorConfig plugin for your editor of choice.
+Code formatting conventions are defined in the `.editorconfig` file which uses the [EditorConfig](http://editorconfig.org) syntax. There are [plugins for a variety of editors](http://editorconfig.org/#download) that utilize the settings in the `.editorconfig` file. We recommended installing the EditorConfig plugin for your editor of choice.
 
 Your bug fix or feature addition won't be rejected if it runs afoul of any (or all) of these guidelines, but following the guidelines will definitely make everyone's lives a little easier.
 

README.md

@@ -15,24 +15,18 @@
 
 ## Getting Started
 
-Before installing and using webmention-client-ruby, you'll want to have [Ruby](https://www.ruby-lang.org) 2.7 (or newer) installed. It's recommended that you use a Ruby version managment tool like [rbenv](https://github.com/rbenv/rbenv), [chruby](https://github.com/postmodern/chruby), or [rvm](https://github.com/rvm/rvm).
+Before installing and using webmention-client-ruby, you'll want to have [Ruby](https://www.ruby-lang.org) 2.7 (or newer) installed. Using a Ruby version managment tool like [rbenv](https://github.com/rbenv/rbenv), [chruby](https://github.com/postmodern/chruby), or [rvm](https://github.com/rvm/rvm) is recommended.
 
-webmention-client-ruby is developed using Ruby 2.7.7 and is additionally tested against Ruby 3.0, 3.1, and 3.2 using [GitHub Actions](https://github.com/indieweb/webmention-client-ruby/actions).
+webmention-client-ruby is developed using Ruby 2.7.8 and is tested against additional Ruby versions using [GitHub Actions](https://github.com/indieweb/webmention-client-ruby/actions).
 
 ## Installation
 
-If you're using [Bundler](https://bundler.io) to manage gem dependencies, add webmention-client-ruby to your project's `Gemfile`:
+Add webmention-client-ruby to your project's `Gemfile` and run `bundle install`:
 
 ```ruby
-gem 'webmention'
-```
-
-…and run `bundle install` in your shell.
+source "https://rubygems.org"
 
-To install the gem manually, run the following in your shell:
-
-```sh
-gem install webmention
+gem "webmention-client"
 ```
 
 ## Usage
@@ -53,7 +47,9 @@ webmention-client-ruby was completely rewritten for version 6 to better support
 
 ## Contributing
 
-Interested in helping improve webmention-client-ruby? Awesome! Your help is greatly appreciated. See [CONTRIBUTING.md](https://github.com/indieweb/webmention-client-ruby/blob/main/CONTRIBUTING.md) for details.
+See [CONTRIBUTING.md](https://github.com/indieweb/webmention-client-ruby/blob/main/CONTRIBUTING.md) for more on how to contribute to webmention-client-ruby. Your help is greatly appreciated!
+
+By contributing to and participating in the development of webmention-client-ruby, you acknowledge that you have read and agree to the [IndieWeb Code of Conduct](https://indieweb.org/code-of-conduct).
 
 ## Acknowledgments
 

USAGE.md

@@ -7,10 +7,10 @@ Before using webmention-client-ruby, please read the [Getting Started](https://g
 With webmention-client-ruby installed, you may send a webmention from a source URL to a target URL:
 
 ```ruby
-require 'webmention'
+require "webmention"
 
-source = 'https://jgarber.example/post/100' # A post on your website
-target = 'https://aaronpk.example/post/100' # A post on someone else's website
+source = "https://jgarber.example/post/100" # A post on your website
+target = "https://aaronpk.example/post/100" # A post on someone else's website
 
 response = Webmention.send_webmention(source, target)
 ```
@@ -61,8 +61,8 @@ response.uri       #=> HTTP::URI
 To send webmentions to multiple target URLs mentioned by a source URL:
 
 ```ruby
-source = 'https://jgarber.example/post/100'
-targets = ['https://aaronpk.example/notes/1', 'https://adactio.example/notes/1']
+source = "https://jgarber.example/post/100"
+targets = ["https://aaronpk.example/notes/1", "https://adactio.example/notes/1"]
 
 responses = Webmention.send_webmentions(source, targets)
 ```
@@ -75,18 +75,18 @@ webmention-client-ruby supports submitting a [vouch](https://indieweb.org/Vouch)
 
 ```ruby
 # Send a webmention with a vouch URL to a target URL
-Webmention.send_webmention(source, target, vouch: 'https://tantek.example/notes/1')
+Webmention.send_webmention(source, target, vouch: "https://tantek.example/notes/1")
 
 # Send webmentions with a vouch URL to multiple target URLs
-Webmention.send_webmentions(source, targets, vouch: 'https://tantek.example/notes/1')
+Webmention.send_webmentions(source, targets, vouch: "https://tantek.example/notes/1")
 ```
 
 ## Discovering mentioned URLs
 
 To retrieve unique URLs mentioned by a URL:
 
 ```ruby
-urls = Webmention.mentioned_urls('https://jgarber.example/post/100')
+urls = Webmention.mentioned_urls("https://jgarber.example/post/100")
 ```
 
 `Webmention.mentioned_urls` will crawl the provided URL, parse the response body, and return a sorted list of unique URLs. Response bodies are parsed using MIME type-specific rules as noted in the [Verifying a webmention](#verifying-a-webmention) section below.
@@ -129,7 +129,7 @@ verification = Webmention.verify_webmention(source, target)
 
 # Verify that a source URL links to a target URL and that the vouch URL mentions
 # the source URL's domain
-verification = Webmention.verify_webmention(source, target, vouch: 'https://tantek.example/notes/1')
+verification = Webmention.verify_webmention(source, target, vouch: "https://tantek.example/notes/1")
 ```
 
 `Webmention.verify_webmention` returns an instance of `Webmention::Verification` which includes the following methods (each returns either `true` or `false`):