Fuse 6.1 introduction + some amendments

* Addition of fuse introduction
* extended readme.md and 
* altered Gruntfile.js to listen on all local addresses (useful when sharing the presentation on a local N/W),  
* Also moved examples to content.
OK, I can see your point, then what I propose is that each html file in the content directory needs to be just index.html so the url is shorter - make sense?