small changes to gitignore
value checking, mild refactoring of nbstate methods
add scaletest.py
added test directory and test case reader/creator
actually added test directory
remove .pyc files
tests for sphere and mass selections added
starting to change rendering
Update README.md
added half mass radius code
added lagragian radii note
Merge branch 'robustness' of https://github.com/nickolas1/nigel into robustness
change path in maptest
remove junk