HTTP API + MATLAB Interface

A new module was introduced, `tvb.api.http` that provides a CherryPy controller which is vastly simplified, but similar to the BurstController in the framework package, which simply maps a JSON description of a simulator onto a simulator object, runs it, and dumps the data into a HDF5 file in MATLAB's current working directory. 

The second half is the series of MATLAB functions that handle querying TVB about the available classes, creating new simulations (that will run in multiple processes) and loading the results.

Preliminary testing has been worked out in `vb_test.m`.