Add missing documentation for rbt alias and install.

Review Request #10033 — Created June 22, 2018 and submitted — Latest diff uploaded

Information

RBTools
release-1.0.x
d111ea2...

Reviewers

Both rbt alias and rbt install were lacking documentation. This
change adds entries for them, allowing us to reference these commands in
release notes and other documentation.

Built the docs. Checked for errors.