Renamed self.before to self.scanned_comments

Also changed permissions on runtests.sh
Added Travis CI to automatically run tests whenever changes are pushed
Refactoring more "before" names

changed "before_id" to "most_recent_comment_id"
changed "test_before" to "test_recent"
changed "old_before_id" to "old_comment_id"
Created method: get_most_recent_comment

It returns the most recent comment from self.scanned_comments, this is more easily testable than if it were a part of scan_comments
Deleted comments from Travis YAML
Fixing .travis.yml
Run travis! Run!
Created rescan_comment_wrapper and info methods for the Reddit mock
Merge pull request #49 from chrisuehlinger/master

Preparing for next round of tests and implementing Travis CI