add os x section to Installing Riak CS page
add OS X sections to Local Test Environment doc
Merge remote-tracking branch 'origin' into bugs/lp/riakcs-osx-docs
file name -> filename
add material to Rolling Upgrade docs plus lots of small stuff
tar -xvf --> tar -xvzf
make examples more CURLy
Merge remote-tracking branch 'origin' into bugs/lp/riakcs-osx-docs
Merge pull request #761 from basho/bugs/lp/riakcs-osx-docs

Add'l OS X documentation for Riak CS