Added descriptions to oauth module's configurables.

lib/oauth.js

@@ -12,7 +12,13 @@ everyModule.submodule('oauth')
   .definit( function () {
     this.oauth = new OAuth(this.appId(), this.appSecret(), this.apiHost());
   })
-  .configurable('apiHost appId appSecret myHostname redirectPath')
+  .configurable({
+      apiHost: 'e.g., https://graph.facebook.com'
+    , appId: 'the OAuth app id provided by the host'
+    , appSecret: 'the OAuth secret provided by the host'
+   ,  myHostname: 'e.g., http://local.host:3000 . Notice no trailing slash'
+    , redirectPath: 'Where to redirect to after a failed or successful OAuth authorization'
+  })
   .get('entryPath')           // Declares a GET route that is aliased
                               // as 'entryPath'. The handler for this route
                               // triggers the series of steps that you see