Add docs directory

And a file with some preliminary notes

docs/NOTES.rst

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+Converse.js configuration variables:
+====================================
+
+Prebind
+--------
+
+Use this option if you don't want to render the login form on the chat control
+box.
+
+When set to true, the onConnected method needs to be called manually, together
+with a Strophe connection object.
+
+The most likely usecase is if you want to already authenticate on the backend
+and merely attach to that connection in the browser.
+
+Besides requiring the back-end to authenticate you, you'll also 
+have to write a Javascript snippet to attach to the set up connection::
+
+    $.JSON({
+        'url': 'mysite.com/xmpp-authenticate',
+        'success': function (data) {
+            connection = new Strophe.Connection(data.BOSH_SERVICE_URL);
+            connection.attach(data.jid, data.sid, data.rid, converse.onConnected);
+        }
+
+fullname
+--------
+
+If you are using prebinding, you need to specify the fullname of the currently
+logged in user.
+
+xhr_user_search
+---------------
+
+There are two ways to add users. 
+
+* The user inputs a valid JID (Jabber ID), and the user is added as a pending
+contact.
+* The user inputs some text (for example part of a firstname or lastname), an XHR will be made to a backend, and a list of matches are returned. The user can then choose one of the matches to add as a contact.
+
+This setting enables the second mechanism, otherwise by default the first will
+be used.
+
+auto_subscribe
+--------------
+
+If true, the user will automatically subscribe back to any contact requests.
+
+animate
+-------
+
+Show animations, for example when opening and closing chat boxes.