Krastanov/sympy — pull request #2 by goodok (2011-11-14 18:21:50+00:00)
Title: Plotting, Enabled doctests for some utils. 

So they can be tested with the help of `./bin/doctest sympy/plotting/` command.

Note that an `sympy/plotting` item was deleted from the blacklist of `doctest` utility. And `sympy/plotting/pygletplot` is inserted instead of.