Improve Client setup steps
Improve Client setup steps

There have been several customer support requests around how Clients
need to be configured in the WordPress plugin. This commit will
add additional information on Client setup, more clear steps on DB
Connections, and a link to info on Social Connections.

yvonnewilson/docs,auth0/docs,jeffreylees/docs,auth0/docs,auth0/docs,jeffreylees/docs,jeffreylees/docs,yvonnewilson/docs,yvonnewilson/docs