Added FAQ Example for setting AssignmentRule and added code-block highli...

I added an example for triggering the Default Assignment Rule for the Salesforce ORG.  I found a thread with incorrect information on the Wordpress support forums (http://wordpress.org/support/topic/salesforce-api-and-assignment-rules) and was able to find a solution using an API hook you conveniently provided.  Thought it might help someone else out.

Also, I added some syntax highlighting for the other code example.

Credit to my employer, Kiosk Creative LLC in Novato, CA, as well as this was a company project.