Got basic logging working

User can view a log of API accesses

Added humanization helper for log items
convert README to markdown format
add Travis CI badge to our README (watching master branch)
[#42995847] User can view a log showing API access to their account (bug fixes for the HAML and small changes to specs)
Merge branch 'master' of github.com:GSA-OCSIT/mygov-account
[finishes #52795457] User should only see latest 10 or so records in the API activity log
Only run travis on master branch, remove Ruby 1.9.2 build.
[#42995847] User can view a log showing API access to their account (bugfix: ensuring @app gets set in the oauth controller)
Merge branch 'master' of github.com:GSA-OCSIT/mygov-account
Updates to privacy policy.
Fix indentation on markdown of Privacy policy.
[Fixes #52940715] oauth2-provider gem does not properly parse redirect URI when parameters are already set.
Refactor Activity Log.
added brakeman security static code analysis gem -- run with 'brakeman' in the top-level dir to get a report on various static code checks
Remove duplicate entry for brakeman gem in Gemfile.
[Completes #53361411] Third-party applications can uniquely identify a MyUSA user by a MyUSA unique id

 - Partial commit for homogenous UUID generation. Implements authentications, partially.

 - Adds tests for UUID in profile API. Updates method for querying/inserting omniauth authentications.

 - Specifies rb-readline version in Gemfile.

 - Adds index to authentications table for UID column. Updates API and tests to utilize 'id' for UUID field rather than 'uid'.

 - Re-order groups in Gemfile, update warden gem to 1.2.3.

 - Change index on authentications to [:uid, :provider]

 - Slight refactoring.
Alter 'remove_provider_from_users' migration to add authentications via a scope off users.
Fix RemoveProviderFromUsersMigration to iterate over users.
update to latest ruby patchlevel
Added awesome_print gem