new RDF js library to help with RWW

Hello,

At Stample we have built a layer on top of RDFLib.js to make it easier to
navigate between RDF resources, using a PointedGraph abstraction.

https://github.com/stample/rdflib-pg-extension


We'll also try to add features to make it easier to edit graphs in the RWW
world.
Feedbacks, ideas and contributions are welcome.

Here is a JsFiddle that show some functionality:
http://jsfiddle.net/D5Gqs/4/