Removed unneeded module
Scopes: Improved parameter check
Use older release of "mocha" to fix tests with Ruby 1.8.7
Readme: Fixed some typos
Scopes: Check param to be persistent User (having an id)
Released 0.1.2
Updated README to add a few syntax highlights.
Tests: Using gem "timecop" instead of "mocha" for time traveling

Mocha causes some trouble with Rails 3.0.20
Merge pull request #14 from parndt/patch-1

Updated README to add a few syntax highlights.
Support for Rails 2 dropped
Tests: Fixed class loading issue with Rails 3.0
Added code climate badge
Whitespace cleanup
Refactoring .reset_read_marks!
Refactoring mark_as_read!
ReadMark: Removed unneeded scopes
Comment added
Cleanup
mark_array_as_read: Simplified scoping

Still complex, but "first_or_initialize" is not available at Rails < 3.2
Simplified .cleanup_read_marks!