Neutralize case for server side messages

It can be helpful if messages use upper case on server side (e.g. Java enums).
Merge pull request #38 from chasemgray/master

Programmatically destroy messages & allow disabling click to close
Add custom notify method

Custom notify method can be useful if message severity is known as string at the
callpoint. It helps to avoid code like `growl[severity](text, config)` which is
tricky and error-prone.
Merge pull request #41 from madhead/master

Adding general growl method for sending growls when the severity is a text variable.
Prevent NPEs when working with server-side messages
Update build
Merge pull request #45 from madhead/master

Prevent NPEs when working with server-side messages
Updated build files
Update growlFactory.js

checkResponse return: "undefined .data" on offline connection. Added "response!=undefined &&" to prevent this.
Merge pull request #50 from brunoporto/master

Update growlFactory.js
possibility to not translate message even if the translate filter is available
Merge pull request #55 from schoes/master

possibility to not translate message even if the translate filter is ava...
Updated the build files, added the readme