Created Mail controller plugin
Updated MailPlugin to accept options both as a MailOptions instance or an array
Updated MailPlugin to be a plugin used only to send emails
Finished implementation of SendMailPlugin
Enhanced MailServiceMock
Added SendMailPluginTest suite
Fixed bug in SendMailPlugin
Enhanced SendMailPluginTest
Created and registered factory for sendMail controller plugin
Added controller plugin documentation to README
Merge branch 'feature/64' into develop