CocoaPods Support (#135)

This adds support for CocoaPods and tries to automatically push new versions to CocoaPods whenever a new tag is created.

* Update existing podspec file 
* Add GH Action

.github/workflows/cocoapods.yaml

@@ -0,0 +1,25 @@
+name: deploy_to_cocoapods
+
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  build:
+    runs-on: macOS-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Install Cocoapods
+        run: gem install cocoapods
+
+      - name: Deploy to Cocoapods
+        run: |
+          set -eo pipefail
+          export LIB_VERSION=$(git describe --tags `git rev-list --tags --max-count=1`)
+          pod lib lint --allow-warnings
+          pod trunk push --allow-warnings
+        env:
+          COCOAPODS_TRUNK_TOKEN: ${{ secrets.COCOAPODS_TRUNK_TOKEN }}

Sources/TelemetryClient/TelemetryClient.h

@@ -8,4 +8,3 @@ FOUNDATION_EXPORT const unsigned char TelemetryClientVersionString[];
 
 // In this header, you should import all the public headers of your framework using statements like #import <TelemetryClient/PublicHeader.h>
 #import <TelemetryClient/TelemetryClient.h>
-

TelemetryClient.podspec

@@ -1,10 +1,25 @@
 Pod::Spec.new do |spec|
   spec.name         = "TelemetryClient"
-  spec.version      = "1.4.2"
+  spec.version      = ENV['LIB_VERSION'] || '1.5.0' #fallback to major version
   spec.summary      = "Client SDK for TelemetryDeck"
   spec.swift_versions = "5.2"
-  spec.description  = "This package allows you to send signals to TelemetryDeck from your Swift code. Sign up for a free account at telemetrydeck.com."
-  spec.homepage     = "https://github.com/TelemetryDeck/SwiftClient"
+  spec.summary  = "Swift SDK for TelemetryDeck, a privacy-first analytics service for apps. Sign up for a free account at telemetrydeck.com."
+    spec.description  = <<-DESC
+                      Build better products with live usage data. 
+                      Capture and analyize users moving through your app 
+                      and get help deciding how to grow, all without 
+                      compromising privacy!
+
+                      Setting up TelemetryDeck takes less than 10 minutes. 
+                      Immediately after publishing your app, TelemetryDeck 
+                      can show you a lot of base level information:
+
+                      How many users are new to your app?
+                      How many users are active?
+                      Which versions of your app are people running, and 
+                      on which operating system and device type are they?
+                   DESC
+  spec.homepage     = "https://telemetrydeck.com/?source=cocoapods"
   spec.license      = { :type => "MIT", :file => "LICENSE" }
   spec.author             = { "Daniel Jilg" => "daniel@telemetrydeck.com" }
   spec.ios.deployment_target = "12.0"