DOC: fix api docs
DOC: clean-up docstrings of option functions

so they render nice with sphinx without warnings
DOC: corrections in v0.14.0 / release
DOC: put in anticipated release date in release / v0.14.0 (May 31, 2014)
DOCS: updated 10min.rst to create link to docstring
Merge branch 'gh3850' of https://github.com/clham/pandas into gh3850