Add mac notifications

Gemfile

@@ -30,6 +30,7 @@ group :test, :development do
   gem 'capybara-webkit'
   gem 'guard-rspec'
   gem 'libnotify', :require => linux_only('libnotify')
+  gem 'terminal-notifier-guard', :require => darwin_only('terminal-notifier-guard')
   gem 'rb-fsevent'
   gem 'database_cleaner', '1.0.1'
   gem 'coveralls', require: false

Gemfile.lock

@@ -175,6 +175,7 @@ GEM
       activesupport (>= 3.0)
       sprockets (~> 2.8)
     sqlite3 (1.3.7)
+    terminal-notifier-guard (1.5.3)
     thin (1.5.1)
       daemons (>= 1.0.9)
       eventmachine (>= 0.12.6)
@@ -218,6 +219,7 @@ DEPENDENCIES
   sass-rails (~> 4.0.0)
   sdoc
   sqlite3
+  terminal-notifier-guard
   thin
   uglifier (>= 1.3.0)
   validates_timeliness (~> 3.0)

Guardfile

@@ -2,7 +2,12 @@
 # More info at https://github.com/guard/guard#readme
 
 guard :rspec do
-  notification :libnotify, :timeout => 5, :transient => true, :append => false, :urgency => :critical
+  if RUBY_PLATFORM.include?('linux')
+    notification :libnotify, :timeout => 5, :transient => true, :append => false, :urgency => :critical
+  end
+  if RUBY_PLATFORM.include?('darwin')
+    notification :terminal_notifier, :timeout => 5
+  end
 
   watch(%r{^spec/.+_spec\.rb$})
   watch(%r{^lib/(.+)\.rb$})     { |m| "spec/lib/#{m[1]}_spec.rb" }