update plugin repo path to supermarin
Update README.md

* Made Uninstall directions more clear. If you're going to allow for copy paste installation, you might as well do the same for Uninstall.
* Added requirements which I learned _after_ I installed it.
Update README.md

Made Uninstall section make more sense.
remove broken reference
fix failing tests
Make sure Travis build can actually fail.
Merge pull request #131 from rhgills/master

Fix failing tests
Log build steps when testing on CI.
Merge pull request #135 from rhgills/master

Log build steps when testing on CI
Merge pull request #127 from jacobvanorder/patch-1

Update README.md
remove redundant uninstall instructions
add install script
add post install message
Update installation instructions in the README
Fixed missing quote for creating PLUGINS_DIR

Resulting in this install error: 
tar: could not chdir to '/Users/jean/Library/Application Support/Developer/Shared/Xcode/Plug-ins'
update Gitter room
Merge pull request #139 from jeanregisser/master

Fixed missing quote for creating PLUGINS_DIR
apply consistent  on variables
Add plist key for Xcode 5.1