Add Riak CS Release Notes page

Add a page under Riak CS References containing the release notes for
all Riak CS releases
Fix deprecated for cluster cmd links
Merge pull request #117 from basho/eas-fix-deprecated-riak-admin-links

Fix deprecated for cluster cmd links
Merge pull request #114 from basho/klm-cs-release-notes

Add Riak CS Release Notes page
Fix broken links found by validator.w3.org
Fix 2 links broken up into two lines
Merge pull request #119 from basho/eas-fix-broken-links

Fix broken links found by validator.w3.org
Adding a prereqs section to detail XCode, XCode CLI Tools and rvm prereqs to the README.md doc.
Adding the image for where the XCode CLI Tooling is.
Changing the image with a crop for CLI. Making README.md a little easier to read thus.
Adding a little more README.md formatting.
Did not work with that formatting, oops.
initial work
Made the search hook copy/pastable

The old command assumed that you knew what about stdout and ^D.

This command lets you copy/paste it.
Updated AWS Marketplace doc to include new security group rule creation steps
updates and clarification of terms
Merge pull request #124 from ericmoritz/patch-1

Made the search hook copy/pastable
Remove bad Rolling Upgrade link from Source Install tutorial
Shrunk that image a bit and also added a note relating to the prereqs being OS-X specific.
Update README.md

Fixing image placement.