Adds "Deploy to Heroku" button (#7)

* Create app.json

* Update README.md

* Create Procfile

* Update package.json

Procfile

@@ -0,0 +1 @@
+web: node dist/index.js

README.md

@@ -1,4 +1,4 @@
-[![GPL-3.0 License][license-shield]][license-url] [![Docker Pulls][docker-shield]][docker-url]
+[![GPL-3.0 License][license-shield]][license-url] [![Docker Pulls][docker-shield]][docker-url] 
 
 <br />
 <p align="center">
@@ -38,6 +38,14 @@
 
 This is the relay server for CrewLink, an Among Us proximity voice chat program. I am currently hosting a server at `ottomated.net:9736`, but if you want a more reliable option I would suggest to deploy this repository yourself.
 
+## Deploy to Heroku
+
+To get up and running quickly, you can deploy to Heroku using the button below
+
+[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy)
+
+This will deploy an instance of the crewlink-server. You can get the URL of your server by using the app name that you gave when you launched the app on heroku and appending `.herokuapp.com`. You can also find the URL of your server by going to "Settings", scrolling down to "Domains", and removing the `https://` and trailing slash from the url. Using this URL, follow step 4 of the [installation instructions](https://github.com/ottomated/CrewLink-server#manual-installation) to connect your client to your server instance.
+
 ## Docker Quickstart
 
 Run the server with [Docker](https://docs.docker.com/get-docker/) by running the following command:

app.json

@@ -0,0 +1,7 @@
+{
+  "name": "CrewLink Server",
+  "description": "Voice Relay server for CrewLink",
+  "repository": "https://github.com/ottomated/CrewLink-server",
+  "logo": "https://github.com/ottomated/CrewLink-server/raw/master/logo.png",
+  "keywords": ["node", "among us"]
+}

package.json

@@ -11,7 +11,8 @@
  },
  "scripts": {
   "start": "yarn compile && node dist/index.js",
-  "compile": "tsc"
+  "compile": "tsc",
+  "postinstall": "yarn compile"
  },
  "devDependencies": {
   "@types/express": "^4.17.8",