Public/User collection updates

the latest revision of the public/user collection can be imported va this bit.ly link which points to master

Enhancements

• /messages: added formatting examples and illustrated limits (english/asian)
• /webhooks: added all/all example

Fixes

• removed un-necessary Content-Types for GET request

More details

• /messages
  

• /webhooks
  

User and Admin collections

User API resources

• Memberships,
• Messages,
• People,
• Rooms,
• Teams,
• Team memberships,
• Webhooks

Admin API resources:

• Licenses,
• Organizations,
• People,
• Roles