Switch to Parse 1.4

Using Parse+NSCoding with 1.4 is impossible because of conflict between new Parse library and deprecated Parse-iOS-SDK. I know there are some issues with new Parse SDK and NSCoding+Parse. I have tested it on saving and restoring custom subclasses and it works. So PFACL and PFObject seem to be fine. Even if there are some issues with PFFile that I cannot confirm, it would be still easier to fix things when we have working pod.

Related to #19