add fitgem
upgrade jbuilder and angularjs gems
build Fitbit api endpoints that connect to Fitbit with fitgem

- will connect angularJS to these rails api endpoints next
add fake secret key base to travis config
connect angularJS fitness controller with rails fitbit API
add BMI to api response
connect angular fitness controller to template
create filter for converting minutes to hrs and mins
Merge pull request #3 from MisterBender/fitbit_integration

Fitbit integration