basic changes to install docs
add cli tools doc
add to global nav
add some example usages
finish listing commands
small changes
add note on multibag
add most stanchion commands
add weight example
finish missing commands
begin GC section
switch back to original arrangement
change doc title
rewording in multibag command docs
merge to master
Merge pull request #1200 from basho/features/lp/riak-cs-command-docs

Ready: Add docs for the various Riak CS CLI interfaces