Merge pull request #8 from mh120888/base-styling

Base styling
Add bicycle controller, calculator action, and associated view/route for the savings calculator
Adds comments to routes file
Adds js logic for calculating and displaying savings from biking over driving.
Adds base styling to gas savings calculator
Adds additional text to gas savings calculator view
Changes name of gas savings calculator link in dropdown from navbar
Merge pull request #9 from mh120888/bike-savings-calculator

Bike savings calculator
Incorporates gravatars into feed view
Removes sqlite3 from production
Updates Gemfile.lock after changes to gemfile
Update and rename README.rdoc to README.md
Update README.md
Update README.md
Update README.md
Adds tests for status updates - status won't update if nothing changed.
Adds test to verify a user cannot view the show status path for another user's status.
Update README.md
Created new model, UserFriendships, to allow users to have friends
Tested and built associations between users and friends (who are also users)
Tests further associations between users and friends, including tests
Adds pry to Gemfile
Users can choose to add other users as friends
Adds associated tests, views, etc. for this functionality
Adds integration test for adding a friend, modifies user fixture to have password hash for "testing" as password