Note about awful's location in system's PATH

https://github.com/mario-goulart/awful-doc/issues/2
Fix various typos.
Merge pull request #3 from vanderhoorn/master

Fix various typos.
More textual improvements; use US English consistently.

Signed-off-by: Mario Domenech Goulart <mario.goulart@gmail.com>
Document the trampoline-path keyword parameter for login-form
Add example with AngularJS
Add links in version history to documentation for older awful versions
Document define-login-trampoline's keyword parameters

Thanks to Wernher von Braun for spotting that omission
Update copyright year
Update help message
Update version history for 0.40.0
Mention awful-ssql in documentation fo $db and $db-row-obj
Add warning to sql-quote to indicate it is deprecated
Document change in use-fancy-web-repl?'s default value
version-history: SSQL support is for $db-row-obj too