Merge pull request #13 from jjhelmus/master

BUG: Fix so aoslib can compile with mingw
add crossvectors wrapper and test, pydoc is a bit sparse
add ctop f2py wrapper
Merge pull request #15 from rokuingh/master

add crossvectors wrapper and test, pydoc is a bit sparse.  also add ctop and test; pydoc needs a little more revision for style
Added wrapper for add_aray function.