Merging Intermediate Python Material from LBL-WISE Bootcamp

For the LBL-WISE bootcamp I modified and reformatted the intermediate python material.

* 01-intro-python.ipynb 

    * combined modularization and intro notebook. This notebook is meant to be the whole learn python /best practices lesson

    * Switch from Pandas to numpy

* 04-testing_master.ipynb

    * This is a testing module more focused on unit testing and nosetests. It incorporates some concepts from 03-qa.ipynb. I'm sure it could use some improvement. 

    * This more of a novice that intermediate testing, but most intermediate users are novice testers

    * This material builds on that taught in the 01-intro-python.ipynb lesson

* plot_temperature.py - written as part of the 01-intro-python.ipynb lesson

* test_plot_temperature.py - written as part of the 04-testing_master.ipynb lesson