Jupyter Kernels

Follow-up on https://github.com/jupyter/jupyter_core/pull/61

• Jupyter kernelspecs should default to install to python's sys.prefix.

• There should be a convenience function in jupyter_client to construct the kernel spec path, which can be used in a package's setup.py, for example.

• Figure out what works with Python wheels.

• Document the work here in http://jupyter-client.readthedocs.org/en/latest/

• Make the EchoKernel into a complete python package with a setup.py that installs the kernelspec, as an example.

Documentation

• Overview documentation page that guides a user to the appropriate repo docs.