documenting new optional deploy command line arguement overrides

Author: Chris Raynor

lib/help.js

@@ -123,6 +123,10 @@ module.exports = {
                     '\n' +
                     '      -m, --message  An optional version message\n' +
                     '\n' +
+                    '      -f, --firebase Overrides the Firebase setting in the firebase.json\n' +
+                    '      -p, --public   Overrides the public directory setting in the\n' +
+                    '                     firebase.json\n' +
+                    '\n' +
                     '    Uploads the directory detailed in the firebase.json settings file and\n' +
                     '    updates the security rules of the Firebase if specified. The current user\n' +
                     '    must have access to the Firebase in firebase.json, and if the user is not\n' +