Cleaned up utils doc, links directly to wd api now.

Util's documentation had a myriad of repeated parameters. Consolidated
them into a single header now which has references to it.

Now have intersphinx setup for webdriver's documentation. Linking
directly to a lot of things in descriptions.
Porting github readme to doc. Have install section
Imported / transferred script converter section
Fixed sw.child.rst (was pool), added sw.pool.rst
Fixed a few intradocument links.
Fixed function links in converter documentation.
util's doc moved to util.rst, other rst's matched
Fixed directive bullets, added wrapper section
Missing spaces / punctuation in logging.
Added a new section on logging.
Added missing images to master
Fixed links within several documents
Merge branch 'master' into curses