[PATCH] Some Documentation Changes

[Jamie Couture]

Hi,

Here are a series of patches to correct some spelling and grammar in the
documentation.

I've also created a section for deprecated options, and removed the
functionality for 'index-header' and 'index-info'.  I'm not sure how well a few
of these will be received, since I'm not sure when cgit is planning on bumping
to v1.0.

I broke the changes up as much as I could.

--
Jamie