Fixes for OS X examples in .pbxproj files

All examples run, by simply swapping last two in FRAMEWORK_SEARCH_PATHS
in the .pbxproj files. No need to change -+rtaudio=coreaudio to
portaudio in /Libraries/OSX/csound-OSX/CsoundObj.m
Merge pull request #48 from cerkut/develop

Fixes for OS X examples in .pbxproj files