Cleaning up grunt tasks

Closes Issue #41

* Removed .bower.rc and installed a grunt bower task
* Installed nodemon grunt task and removed separate config file
* Installed a grunt env script to handle environment variables with ability to
  override them with an ~/.env file
* Updated README.md with some of this information
Merge pull request #45 from legitco/grunt-env

Cleaning up grunt tasks
Adding webhook for legitbot
Removing irc notification