Updated mongoid dependency and gems
Fixed scope errors
Refactored old lambda style
Updated Moped references and mongoid version check
Removed .ruby-version from VCS
Removed deprecation warnings for rspec
Added include of Dynamic Mongoid attributes
Testing for mongoid 3 & 4 and travis
Tests work form Mongoid 3&4
Added ruby-head to tests
Updated readme
Merge pull request #20 from deiga/mongoid4

Added compatibility with Mongoid 4