ENH: improved build script on OSX

Doesn't use sudo (so hopefully fewer permissinos issues)

Uses `ditto` to strip out ppc and x86_64 architecture binaries
(saves ~100Mb in the app)
Merge pull request #244 from jeremygray/master

nxutils can be present but not work for point-in-polygon stuff
Added script reference for launcher
Merge pull request #245 from TheChymera/master

script reference for 'psychopy/app/psychopyApp.py' (thanks to Christian Horea)
DOCS: minor fixes and changelog
Merge branch 'master' of github.com:psychopy/psychopy
RF: removed support for (crumby) Quicktime movie compiling under OSX
Added svg icon
Merge pull request #246 from TheChymera/master

.svg icon
BF: fixes to mac build script to get pandas and tables working
BF: pyo Server should use coreaudio on mac for lower latency, not portaudio
ENH: setting default sound buffer size to 48 for lower latency
BF: pyo in win32 should check for valid input/outputs before booting server
ENH: moving win32 build scripts to python 2.7 and version to 1.76
RF: pygame should probably remain the default sound backend for now

also fixed EOLs in web.py
DOCS: changelog
ENH: new demo for testing the latency of the sound ouputs (with labjack)
ENH: Sounds (pyo and pygame) now support autoLog for .set____() functions
Merge branch 'master' of github.com:psychopy/psychopy
ENH: pyo (or other lib) does not get initialised until first Sound created (allows different init())

also:
 - pygame not imported if not needed
 - various fixes to docs