Reverse show=True to False since it does not work
Shorten copyright notice
Merge branch 'master' of github.com:vispy/vispy

* 'master' of github.com:vispy/vispy:
  Fix issue #37: sort GL constants
Reorganised examples into app - howto and demo sub-directories.
Removed duplicated examples (demonstrating same technics)
Change names in howto directory such that the name match the 'howto' part.