Add Executable Examples

[rasbt]

Would be nice if you could add an ./examples directory containing some IPython Notebooks with a complete TPOT pipeline optimization examples & comments (e.g., using the prostate cancer dataset). You could link them in the README.md file, which would help people to get an overview, plus, people could re-use these notebooks as templates for own experiments.

[rhiever]

Good idea. Don't think I can use the prostate cancer data set (because I can't publicly share that data set), but there's other data sets we can use.

[rhiever]

Since we #32 now, I think we can close this issue.