[Glass] GsDevKit_home Early Access update

[Dale Henrichs via Glass]

Updated the "When a new version of GsDevKit_home is published, how do I 
update my checkout?" FAQ[2], plus some house keeping fixes.

Update with `$GS_HOME/bin/updateGsDevKit -g -i`.

See the Pull Request[2] for additional details.

Dale

[1] https://github.com/GsDevKit/GsDevKit_home/pull/4
[2] 
https://github.com/GsDevKit/GsDevKit_home/blob/master/docs/FAQ/FAQ.md#4-when-a-new-version-of-gsdevkit_home-is-published-how-do-i-update-my-checkout