Feature/model tests

Feature/bootstrap

config files are all located in the project root, so why not include
compass's config file?

to initiate compass, from the project root just type `compass watch`.
this will recompile CSS on any changes to files in the src/sass
directory.

for more info on compass, check out http://compass-style.org/

Feature/travis

slack integration in .travis.yml
travis runs `npm test`