fixes #318

Issue seems to have been a couple small typos, things that didn't get
changes properly.
stubs for cg docs
typo
version added info
Merge pull request #320 from pastephens/master

cg doc stubs
id is a keyword
Merge pull request #324 from pysal/bf_id

id is a keyword
Merge branch 'master' of github.com:pysal/pysal into csf