Added FixedFile.txt for test to check upload/download process

Added 'Objects' tests
Added FileUtils class that could generate MD5 hash, normalize file name for web, etc...
Added 'NullableParser' for cases where output is not expected
Added SwiftObject to define 'object' in swift terms (serializable)
Added SwiftObjectsCollection for collection of SwiftObjects

Can now upload SwiftObject to swift !! :)