Added strings to securesocial.conf in demos

Added some configuration strings to the demos.

onStartSignUpGoTo=/login
onSignUpGoTo=/login
onStartResetPasswordGoTo=/login
onResetPasswordGoTo=/login

This allows users to know how to make custom login
flows without having to dive into the source code.
Merge pull request #256 from alanrodas/demo-updates

Added strings to securesocial.conf in demos