banana-pome and rdfstorew scala-js projects

ScalaJS projects for banana-rdf.
  
• Antonio Garrote is porting rdfstore a pure JS rdf store to banana
• added banana-pome - a first [scala-js](http://www.scala-js.org/) project. A [pome banana](http://www.bananas.org/f2/dwarf-brazilian-vs-unidentified-pome-18078.html) is a small banana.
![image](https://cloud.githubusercontent.com/assets/124506/3559590/c95e1ff0-094c-11e4-9a47-5703c8ecc6ce.png)
As per [pro-musa definition](http://www.promusa.org/Pome+subgroup) the main characteristics of the fruit are that it is small and that "The fruit bunch develops at an angle while the rachis points vertically down. The fruit apex is often bottlenecked." which I think fits very well for the very first ScalaJS banana port.


this should be in its own file, and we should avoid mixing SparqlEngine and SparqlUpdateEngine (still reading, I may be missing something else)