added user language to help companies self select the enterprise edition

Joe, per our conversation and your conversation with Sid, added language to help companies self select the enterprise edition best suited for their organization size and help support messaging that EEP is for companies of 500 users and more.

This is a soft limitation in that our license will not enforce this but the language will help sales point the large customer to the site and show them that they need EEP.

Feel free to merge or edit as you see fit.