Add tests for light manager.
Merge pull request #10 from williambogaiv/add-light-manager-tests

Add light manager tests
Add logic for polling Twitter stream and blinking respective light.
Merge pull request #12 from williambogaiv/add-twitter

Add Twitter light-feature
Add TeamCity pass/fail feature.
Applicable lights will toggle while waiting for build-status results.
Then, a check for build-failures will determine which light stays on - until the next build-status query.