Add Travis CI support
Add build status URL to the README
Move controller test into expected folder
Mock out the getExchangeRate method call
Merge pull request #1 from kyleconroy/travis

Add Travis CI support (and fix the tests)
Fixed README heroku instructions so that step 4 isn\'t getting cut off
Fixed README heroku instructions so that step 4 isn\'t getting cut off
Removed single quotes around heroku instructions