add waffle.io badge
Merge pull request #115 from waffle-iron/master

waffle.io Badge
updated readme to contain number of open issues
get travis-build icon from img.shields.io instead of travis-ci, way better image :-)
new badges from shields.io
optimized badges... now with nr-of-open-issues, nr-of-bugs and build-status...
removed the (outdated) sublime-project definition
oops - missed "link=" in image-URLs
fork-me-at-github ribbon included
corrected missing newline