Documentation is missing for some http endpoints

[manslogic (Mansoor Ahmed)]

Documentation is missing for those end points below:

1. execute_action POST, OPTIONS /conversations/[sender_id]/execute
2. log_message POST, OPTIONS /conversations/[sender_id]/messages
3. predict POST, OPTIONS /conversations/[sender_id]/predict

[Juste]

Hey @manslogic. Please raise an issue about this on Github