Updated new portal screenshots and missing steps
Fixed Typos
Updated prerequisites
Added missing Summary section
Renamed images folder
Minor wording fixes applied to HOL.md
Updated HOL.md and screenshots to set the user name when creating a new VM in the Windows Azure portal
Fixed title of Ex1
Updated screenshots that showed preview features
Removed Preview legend from screenshot
Merge pull request #7 from WindowsAzure-Preview/master

Updated to IaaS Global Availability