Added a simpleREADME on how to use this, and added the i18n text for english...

Added a simpleREADME on how to use this, and added the i18n text for english in this packege until acceptation to keep it  as a single package.

packages/rocketchat-drupal/README.md

+#Drupal oAuth Integration module.
+This module works in conjunction with the [Rocket.Chat+ Module for Drupal](https://www.drupal.org/project/rocket_chat) 
+Version 7.x-1.1 or later.
+
+A full set of instructions for how to connect the 2 are present in the drupal module's documentation.
+
+Basically to connect the 2 you first setup the oAuth server connection in your drupal, with the proper permissions 
+("Use OAuth2 Server" => "Anonymous User" = Checked).  
+
+In the Rocket chat you have to do the following:
+- fill in the 'Client ID'.  
+  Bear in mind that the Client ID should not be guessable,but is seen in the URL when doing the login.
+- fill in the 'Client Secret'.
+  This should be treated as a Secret Key (like the Secret Key of a TLS certificate). it __must not__ be guesable or 
+  derivable, and is best a Alphanumerical sequence between 16 and 48 cahracters long (longer would be better but longer 
+  than 48 characters can be problem with long URI's) 
+- fill in the  Drupal's BaseURL.
+- on the Drupal use the "Restrict redirect URIs" Setting to limit possible exploits. and set the Redirect URI's to 
+  whatever is in the Callback URL (like `https://Rocketchat.example.com/_oauth/drupal` and possibly also the 
+  `https://Rocketchat.example.com/_oauth/drupal?close` URI.).
+- Lastly do not forget to Enable the Drupal OAuth and `SAVE CHANGES`.   
+  
+When all is a Blue Button with a drupal like logo will apear on the login page of Rocket.Chat+

packages/rocketchat-drupal/i18n/en.i18n.json

+{
+"API_Drupal_URL": "Drupal Server URL",
+"API_Drupal_URL_Description": "Example: https://domain.com (excluding trailing slash)",
+"Accounts_OAuth_Drupal": "Drupal Login Enabled",
+"Accounts_OAuth_Drupal_callback_url": "Drupal oAuth2 Redirect URI",
+"Accounts_OAuth_Drupal_id": "Drupal oAuth2 Client ID",
+"Accounts_OAuth_Drupal_secret": "Drupal oAuth2 Client Secret"
+}