Merge branch 'master' of git://github.com/psychopy/psychopy
DOCS: fixed some typos and updated links in ioHub docs
Merge pull request #2 from brian-lau/master

Thank you Brian!
ENH: added BaseVisualStim._updateVertices()
ENH: new vertices control working for BaseVisual and grating.py
ENH: new vertices control working for BufferImageStim
ENH: working on new vertices method for RadialStim (not working)
ENH: new vertices method for RadialStim and SimpleImageStim now working
FF: corrected vertex order so that orientation hack wasn't necessary
ENH: working on elementarray support of new coord system
EHN: new coord system working with ElementArrayStim

Moved the unit conversion function to tools module

Also fixed the orientation to work in the same direction as GratingStim. This
had been fixed with a hack before to alter the orientation during setOris()
but should have been fixed in the rendering routines instead.
EHN: new coord system working with ImageStim

also corrected buglet in Image demo
ENH: allow control over height of RatingScale tickmarks

and tweak some doc-strings
ENH: simpler doc & code for tickmark height in RatingScale

ticksAboveLine: document as numeric; support boolean for backwards compat.
BF: Builder image component: flipHoriz and flipVert parameters were missing in writeInitCode function
Merge pull request #473 from frankpapenmeier/master

BF: Builder image component: flipHoriz and flipVert parameters were miss...
Merge pull request #472 from jeremygray/master

ENH: allow control over height of RatingScale tickmarks
ENH: new coords system now working for text position

updated test images for text test suite
ENH: more efficient accessing of the posPix

We should only access posPix once because it's using a python property
which is 4 times slower to access than a normal variable.
ENH: MovieStim now supports new coords system