Work in progress to incorporate authentication into mvp-sample.  Authentication succeeds; but user is redirected to error page. Why?
Fix start-class
Fix entry-point URL in README
Get security configuration in working order in mvp-sample and upgrade Spring Boot dependency

* Add an init param in application.yml (see StaticContentVaadinServletConfiguration); we must register a widgetset so that static content (i.e.,. compiled JS and theme resources) may be delivered to client after successful authentication
* Upgrade Spring Boot dependency to 1.1.7.RELEASE
Merge pull request #84 from fastnsilver/mvp-sample-with-secuirty

mvp-sample with security