adds omniauth and omniauth-twitter gems and initializer with references to secrets

Gemfile

@@ -21,6 +21,11 @@ gem 'turbolinks'
 gem 'devise'
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
+gem 'omniauth'
+gem 'omniauth-twitter'
+# gem 'omniauth-facebook'
+# gem 'omniauth-google-oauth2'
+
 gem 'kaminari'
 gem 'acts_as_commentable_with_threading'
 gem 'acts-as-taggable-on'

Gemfile.lock

@@ -150,6 +150,7 @@ GEM
       activesupport (>= 4.1.0)
     groupdate (2.4.0)
       activesupport (>= 3)
+    hashie (3.4.2)
     highline (1.7.3)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
@@ -195,6 +196,16 @@ GEM
     netrc (0.10.3)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
+    oauth (0.4.7)
+    omniauth (1.2.2)
+      hashie (>= 1.2, < 4)
+      rack (~> 1.0)
+    omniauth-oauth (1.1.0)
+      oauth
+      omniauth (~> 1.0)
+    omniauth-twitter (1.2.1)
+      json (~> 1.3)
+      omniauth-oauth (~> 1.1)
     orm_adapter (0.5.0)
     paranoia (2.1.3)
       activerecord (~> 4.0)
@@ -362,6 +373,8 @@ DEPENDENCIES
   kaminari
   launchy
   letter_opener_web (~> 1.3.0)
+  omniauth
+  omniauth-twitter
   paranoia
   pg
   poltergeist

config/deploy/shared/secrets.yml.erb

@@ -2,4 +2,7 @@
   recaptcha_public_key: <%= ENV["MADRID_RECAPTCHA_PUBLIC_KEY"] %>
   recaptcha_private_key: <%= ENV["MADRID_RECAPTCHA_PRIVATE_KEY"] %>
   secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
-  server_name: <%= fetch(:server_name) %>
+  twitter_key: <%= ENV["TWITTER_KEY"] %>
+  twitter_secret: <%= ENV["TWITTER_SECRET"] %>
+  server_name: <%= fetch(:server_name) %>
+  

config/initializers/omniauth.rb

@@ -0,0 +1,4 @@
+Rails.application.config.middleware.use OmniAuth::Builder do
+  provider :developer unless Rails.env.production?
+  provider :twitter, Rails.application.secrets.twitter_key, Rails.application.secrets.twitter_secret
+end

config/secrets.yml.example

@@ -14,12 +14,18 @@ default: &default
 
 development:
   secret_key_base: 56792feef405a59b18ea7db57b4777e855103882b926413d4afdfb8c0ea8aa86ea6649da4e729c5f5ae324c0ab9338f789174cf48c544173bc18fdc3b14262e4
+  twitter_key: AAAA
+  twitter_secret: BBBB
   <<: *default
 
 test:
   secret_key_base: 4d5adf961ddd27aef19622d6c0b3234d555f9ee003f022b1f829c92bbe33aaee907be7feb67bd54c14a1a32512fa968565ad405971fbc41bd0797af73c26a796
+  twitter_key: AAAA
+  twitter_secret: BBBB
   <<: *default
 
 production:
   secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
-  <<: *default
+  twitter_key: <%= ENV["TWITTER_KEY"] %>
+  twitter_secret: <%= ENV["TWITTER_SECRET"] %>
+  <<: *default