Use the new CocoaPods resource_bundle feature

This new feature will be available in CocoaPods 0.23.0
Copy *.lproj folders instead of *.strings files

This fixes sporadic CopyStringsFile errors.
Update to ios6 compatible on Modalviewcontroller
Merge pull request #47 from 0xced/cocoapods-resource-bundle

Use the new CocoaPods resource_bundle feature
Merge pull request #48 from pmilanez/develop

Update to ios6 compatible on Modalviewcontroller