Tackled resolving (and tracing) source requirements which were already required (returned false)
Mocking `stringio.rb`, `strscan.rb` (extracted from MacRuby 0.12) and `zlib.rb` (extracted from Zliby 0.0.5)
Corrected require warning printed within iOS simulator console
Testing SlotMachine, StringIO, StringScanner and Zlib within sample app