Move Google Analytics tracking id to .env file

.gitignore

@@ -16,3 +16,6 @@
 
 # Ignore .DS_store file
 .DS_Store
+
+# Ignore the .env file
+/.env

Gemfile

@@ -20,3 +20,5 @@ gem "tzinfo-data", platforms: [:mswin, :mingw]
 gem "capybara"
 gem "poltergeist"
 gem "mini_magick"
+
+gem "dotenv"

Gemfile.lock

@@ -34,6 +34,7 @@ GEM
       sass (>= 3.3.0, < 3.5)
     compass-import-once (1.0.5)
       sass (>= 3.2, < 3.5)
+    dotenv (0.9.0)
     em-websocket (0.5.1)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
@@ -167,6 +168,7 @@ PLATFORMS
 
 DEPENDENCIES
   capybara
+  dotenv
   middleman (~> 3.3.10)
   middleman-deploy (~> 1.0)
   middleman-google-analytics

config.rb

@@ -1,5 +1,8 @@
 require 'lib/screenshot_generator'
 require 'ostruct'
+require 'dotenv'
+Dotenv.load
+
 ###
 # Compass
 ###
@@ -77,7 +80,7 @@ end
 
 activate :google_analytics do |ga|
   # Property ID (default = nil)
-  ga.tracking_id = 'UA-60794054-1'
+  ga.tracking_id = ENV['ANALYTICS_ID']
 
   # Tracking in development environment (default = true)
   ga.development = false