Deprecated imports and non-working examples for embedded Qt console

[ul-gh]

Hi,

when trying out the examples mentioned in the documentation Embedding the QtConsole in a Qt application, I noticed that the embedded IPython kernel example uses deprecated or defunct import locations: (https://github.com/ipython/ipykernel/blob/master/examples/embedding/ipkernel_qtapp.py) I could not figure out how to make that example work.

What did found working instead was using the IPython.embed_kernel() method as described in (closed) issue #197. For that method however, the documentation is very sparse, i.e. where to specify the connection file for the embedded kernel I had to find out from the closed issue example code.

[ccordoba12]

The embedded console is maintained by the community, so it's up to their users to keep it updated and well documented.

Pull requests are welcome to contribute to that, thanks!