Add mapper instancetype for UPPERCASES
Add tests for this mapper
Merge pull request #170 from skywinder/pullRequestUpperCaseMapper

Add mapper instancetype for UPPERCASES
* added UNIT_TESTING for the test suite
Merge branch 'master' of https://github.com/icanzilb/JSONModel
Update JSONModel.podspec
Merge pull request #176 from itriage/master

Add CoreData framework, since there is now a dependency on it.