Add documentation for intersects_point and add intersects_point to __all__
Merge branch 'bsimon-missing-doc'
Merge branch 'master' of https://github.com/spacetelescope/sphere into repository

Conflicts:
	sphere/great_circle_arc.py
Merge branch 'master' of https://github.com/bernie-simon/sphere
Added comment describing C vs Python code
Replaced backslash in multi-line statement with parentheses
Merge pull request #28 from bernie-simon/master

Trivial changes to trigger re-test by Travis