Delete old distribute and sage files
fix 3d graphics TeXForm bug
release.sh files
documentation Makefile platform independent
Merge pull request #164 from sn6uv/m6

Remove old files, fix release bugs
basic unittesting
run unittests with setup.py test
add parser unittests
add simple console unittests
replace unittest with unittest2
only import unittest2 for python2.6
add setup.py test command
sympy.Real -> sympy.Float
fix setup.py import mathics circular dependency
add pypy2 travis tests
add pypy to allowed failures