Add Gemnasium dependency status badge to readme

Change-Id: I18e4730399c28004fc9314cf4a0e7085c5f4c8fb
Reviewed-on: http://gerrit.causes.com/37033
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>
Fix Github fork URL in readme

Change-Id: Ifaef680234555dee57f31ce3e57c7a6ee24ede57
Reviewed-on: http://gerrit.causes.com/37034
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>