FEATURE: first class group mentions built in

If you allow a group to be mentioned it can be mentioned with the @ symbol.

Keep in mind as a safety mechanism max_users_notified_per_group_mention is set to 100

lib/autospec/rspec_runner.rb

@@ -9,17 +9,14 @@ module Autospec
     # Discourse specific
     watch(%r{^lib/(.+)\.rb$})                           { |m| "spec/components/#{m[1]}_spec.rb" }
 
-    # Rails example
     watch(%r{^app/(.+)\.rb$})                           { |m| "spec/#{m[1]}_spec.rb" }
     watch(%r{^app/(.+)(\.erb|\.haml)$})                 { |m| "spec/#{m[1]}#{m[2]}_spec.rb" }
     watch(%r{^spec/.+_spec\.rb$})
     watch(%r{^spec/support/.+\.rb$})                    { "spec" }
     watch("app/controllers/application_controller.rb")  { "spec/controllers" }
 
-    # Capybara request specs
     watch(%r{^app/views/(.+)/.+\.(erb|haml)$})          { |m| "spec/requests/#{m[1]}_spec.rb" }
 
-    # Fabrication
     watch(%r{^spec/fabricators/.+_fabricator\.rb$})     { "spec" }
 
     RELOADERS = Set.new