Added cloud-sdf.py that show how to draw antialiased shape using point sprite and signed ditance field
Fix cloud sdf example for py3k and make it more portable.
Added gravity in fireworks example.
Merge branch 'master' of https://github.com/vispy/vispy
Sort examples docs.
Fix that examples with no docstrings end up correctly in docs.
Added diamond shape
Fix antialiasing
Add new markes and fix antialias
Simplify antialias
Added new markers (clobber one is nice)
Define function for each marker
Better mouse interaction in visual_test
Line visual adds line-width capability
Merge branch 'master' of github.com:vispy/vispy
Fixed issue #15: scroll events have x and y scrolling
ev.delta is a typle with two floats
Merge branch 'master' of github.com:vispy/vispy

Conflicts:
	experimental/visual_test.py
Use six.py throughout vispy
Pyglet backend emits an extra key press event when a 'text' key is pressed
The first keypress event will have text set to empty string. If the
key being pressed represents a character, a second event is emitted
which has the right text, and key set to None.
Added HiDPI support for retina display. Needs a patched glut framework available from http://iihm.imag.fr/blanch/software/glut-macosx/
Fixed newline