document auth configuration (#363)
document auth configuration (#363)

* auth doc
* document the auth configuration
* add developer section
* fix the lone deployment template line
* add note about service-catalog secret dep
* fix missing backticks
* spell checked

jwmatthews/ansible-service-broker,johnkim76/ansible-service-broker,eriknelson/ansible-service-broker,johnkim76/ansible-service-broker,jmontleon/ansible-service-broker,johnkim76/ansible-service-broker,rthallisey/ansible-service-broker,jwmatthews/ansible-service-broker,rthallisey/ansible-service-broker,eriknelson/ansible-service-broker,jmontleon/ansible-service-broker,eriknelson/ansible-service-broker,jwmatthews/ansible-service-broker,rthallisey/ansible-service-broker,jmontleon/ansible-service-broker