Merge pull request #10 from jubianchi/master

Added features to Philip: identifying to NickServ, flood control, help support, improved request reg-ex, ability to gracefully stop, and unit tests/code clean up.
Cleaning up initially sent USER command
identify => IDENTIFY, becuase hey why not
Updating some config array keys [BC break]
Better USER command
Minor code cleanup
Fixed incorrect documentation
Shouldn't be pushing people to unstable versions
Updated contributors list
Added Travis status image
Fixed broken unit test
Fixed Markdown display goof
Reworking plugin loading and initialization
Fleshing out !help command
Updated plugin documentation to include new req'd method