Merge pull request #10 from jjhelmus/master

ENH: Installer and organized source files
Added wrappers with documentation for 37 functions, mainly following
template established by Jonathan Helmus. Added tests for 35 functions.
Added summary doc for each implemented function in __init.py__.
Merge branch 'master' of https://github.com/PyAOS/aoslib
Alphabetized list of implemented functions.
STY: PEP8 on Python files
TST: use assert_allclose in unit tests