Added in clear methods to model and collection stores
Added tests and changed to not clear all collections if collection name is empty
Merge pull request #1 from rendrjs/master

Updated to merge the latest renderjs master branch into our fork.
Added in context to the tests
Resolved conflicts in the test cases from merging
Merge branch 'rendrjs-master'
Added in ability to clear all instances of a model or a collection out of the cache
Merge pull request #383 from crwang/master

Added in clear methods to model and collection stores