Port Tutorials

[robwandrews]

Port of tutorials from sandia labs develop branch.

[bmu]

I think we could shift this to 0.2 and release 0.1 of pvlib.

[wholmgren]

Agreed.

[bmu]

@Calama-Consulting ?

[bmu]

I changed the milestone to 0.2

[wholmgren]

I'm going to mark this 0.3 since I'm not sure what should be ported into new or existing notebooks and what should be put into the docstrings and sphinx documentation.