Fix github service url in comment.

[ci skip]
Merge pull request #10 from simi/patch-1

Fix github service url in comment.
start redis
change to using the metriks librato api gem
remove new_relic
bump to mri 2.1.2
update the .travis.yml

no sudo, change ruby, cache bundler, profit
goodbye new relic, for realz this time
per dyno metrics