major changes to structure of app

 - turning into a legit Capistrano plugin
 - fixing filenames/class structure
 - beginnings of major rewrite
fixing the specs and stuff
removed old capistrano file
depend on capnotify rather than capistrano
implemented capnotify

removed old grove_message cap var
use grove_channel_token, rather than key

this jives with current grove.io documentation
fixed some issues with capnotify variables

also, require 'capnotify'
added travis.yml
rewrote readme for 2.0.0
updated changelog
added build image to readme
clarification about what the variables are.
additional readme cleanup and stuff.
use latest capnotify (0.1.2pre)
bumped to version 2.0.0