bin: Create a kernel spec for IPython 3
bin: Create a kernel spec for IPython 3

* If `ipython --version` returns 3 or higher, then a kernel spec for
  javascript is created and the default IPython notebook profile is
  started

Closes #10

kebot/ijavascript,srounce/ijavascript,kebot/ijavascript,srounce/ijavascript