Merge pull request vinta#346 from rossant/patch-1

Added VisPy

Author: vinta

README.md

@@ -914,6 +914,7 @@ A curated list of awesome Python frameworks, libraries and software. Inspired by
 * [pygal](http://pygal.org/) - A Python SVG Charts Creator.
 * [pygraphviz](https://pypi.python.org/pypi/pygraphviz) - Python interface to [Graphviz](http://www.graphviz.org/).
 * [PyQtGraph](http://www.pyqtgraph.org/) - Interactive and realtime 2D/3D/Image plotting and science/engineering widgets.
+* [VisPy](http://vispy.org/) - High-performance scientific visualization based on OpenGL.
 
 ## Computer Vision