Created readme.md

added a short readme file
small change to readme
Add 'what was delivered in icehouse' slides

Created slides for 'what was delivered in icehouse'.
Broken down into three parts, 1) API overview, 2) Mapping, 3)
Authenticating.
Merge pull request #2 from stevemart/add_os_federation_slides

Add os federation slides
Merge pull request #3 from joesavak/master

outline
Merge pull request #4 from joesavak/master

icehouse
Merge pull request #5 from joesavak/master

icehouse
Merge pull request #1 from RackerWilliams/master

rebase