Merge pull request #21 from danisaurus/twitter-analysis

added sentiment analysis on twitter
added additional methods to gmail api
Merge branch 'master' of https://github.com/danisaurus/shift-api into features-get-gmail-body
Merge pull request #22 from danisaurus/features-get-gmail-body

Features get gmail body
created DailyReport model and migration, and added logic to User model to create a report with their tweets
created daily reports as a join table between users and tweets, and updated all associations
Updated schema so DailyReports have float averages. Added methods to daily report to set average sentiment values
Merge pull request #23 from danisaurus/create-daily-report-logic

Create daily report logic
Merge pull request #24 from danisaurus/continued-user-flow

more user flow
Merging with master
merging with master