Merge pull request #1 from lulalala/reset

Add leaderboard reset function
Regenerate gemspec for version 0.0.1
bumping version to 0.0.2
Regenerate gemspec for version 0.0.2
Remove Gemfile.lock as per http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/
Relax redis dependency