Extract Jobs APIs into Jobs module
Extract Share and Social Stream APIs to ShareAndSocialStream module
Extract Communications APIs to Communications module
Add link to Invitation API
Add link to Network Update Types
Clarify #add_job_bookmark argument
Set convention of using 'update_key' as the argument name

network_key and update_key were used to identify the same thing
Add method for Finding New Connections
Add link to 'Accessing Out of Network Profiles'