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.
Don't agree. It allows you to scroll though each line as a next item. It's just html enrichment. I prefer md to html and if the md gets polluted by a bit of html for the sake of some control then that's not so bad. It's similar for putting images in.