Pandas graphics

[jstac]

This PR adds Dave's notebook on graphics and pandas

[cc7768]

@spencerlyon2 made a comment somewhere (may have been email), but this notebook needs to be updated to access the DataReader in the new way. The way it is being used right now is deprecated.

See the warning in notebook:

C:\Users\dbackus\Anaconda3\lib\site-packages\pandas\io\data.py:33: FutureWarning: 
The pandas.io.data module is moved to a separate package (pandas-datareader) and will be removed from pandas in a future version.
After installing the pandas-datareader package (https://github.com/pydata/pandas-datareader), you can change the import ``from pandas.io import data, wb`` to ``from pandas_datareader import data, wb``.
  FutureWarning)

[mmcky]

This is a bit of a tricky one - as the website for pandas_datareader says:

In future pandas releases (0.17+) pandas-datareader will become a dependancy and using pandas.io.data will be equivalent to using pandas_datareader.data.

It looks like it will work from the pandas package once this dependency is setup. As of 0.17.1 this doesn't work yet though. Also as far as I know the current pandas_datareader package is not included in anaconda at the moment and will require a pip install pandas_datareader.

I propose to update this to use the pandas_datareader package and open an issue to adjust this notebook back to using pandas.io.data once working again in pandas.io.

[mmcky]

This line is going to cause issues with the testing scripts if there is no ../Temp/ folder. Is it ok to update this so the file is saved in the current working directory?

[mmcky]

This is now ready to merged and added to QuantEcon.site notebook gallery