add airbrake support

Gemfile

@@ -99,6 +99,9 @@ gem 'syck', :platforms => [:ruby_20, :mingw_20, :ruby_21, :mingw_21], :require =
 
 gem 'gon', '~> 4.0'
 
+# catch exceptions and send them to any airbrake compatible backend
+gem 'airbrake'
+
 group :production do
   # we use dalli as standard memcache client
   # requires memcached 1.4+

Gemfile.lock

@@ -90,6 +90,9 @@ GEM
     acts_as_list (0.2.0)
       activerecord (>= 3.0)
     addressable (2.3.4)
+    airbrake (3.1.14)
+      builder
+      json
     arel (3.0.3)
     awesome_nested_set (2.1.6)
       activerecord (>= 3.0.0)
@@ -412,6 +415,7 @@ DEPENDENCIES
   activerecord-jdbcsqlite3-adapter
   activerecord-tableless (~> 1.0)
   acts_as_list (~> 0.2.0)
+  airbrake
   awesome_nested_set
   bourbon (~> 4.0)
   capybara (~> 2.3.0)

config/initializers/airbrake.rb

@@ -0,0 +1,11 @@
+if ENV['AIRBRAKE_API_KEY']
+  Airbrake.configure do |config|
+    config.api_key = ENV.fetch('AIRBRAKE_API_KEY')
+    config.host    = ENV['AIRBRAKE_HOST'] if ENV['AIRBRAKE_HOST']
+    config.port    = ENV.fetch('AIRBRAKE_PORT', 443)
+    config.secure  = config.port == 443
+
+    config.rescue_rake_exceptions = true
+    # config.development_environments = []
+  end
+end