More reduction examples as ipython notebooks

Please try putting together your own notebook from the docs because feedback on where the documents are weak.

If you want to see one example, though, it is at: http://nbviewer.ipython.org/gist/mwcraig/06060d789cc298bbb08e

Start by reading the project documentation and the example notebook at the linked nbviewer URL. Build one or more reduction notebooks from the docs, then use them to identify where the documentation is weak; done means the notebooks provide additional reduction examples and clearly expose those gaps.

Written by the indexing model from the issue text.