Add build status badge to readme

This reports our Travis CI build status.

Change-Id: I383a43c821e02c35a547a6caec9bb4af1739d967
Reviewed-on: http://gerrit.causes.com/37030
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>
Add Code Climate badge to readme

Change-Id: I672df08bca1e7c843bee2fa96cc0b27acedee500
Reviewed-on: http://gerrit.causes.com/37031
Tested-by: Joe Lencioni <joe.lencioni@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>