Reviewed README

Also fixed typo in README's example, as reported by @dturner in #20.
Other changes are, in README:

* Fixed the project name in title
* Reviewed the introduction. The goal of this proposal is to provide a better overview of the project's core concepts and instant benefits. As an example: "validate the user input using a form" was a big motivation when we started the project.
* Added "model" option in UserListView