Merge pull request #286 from lawinslow/master

Update code for drought layers
transform functions
removed log fau function
fig w/ axis etc
live dischage fig
Merge pull request #287 from jread-usgs/master

discharge fig w/ live NWIS data
units m3/s
Merge pull request #288 from jread-usgs/master

units m3/s
Update README.md

removed economica data, added discharge.
Update README.md
Update README.md
added text to legend
Create README.md

added methods for discharge
Create README.md

added brief drought methods
Update README.md

added landsat methods
Update README.md

Getting this cleaned up according to the BAOs recommendations
Update README.md
new legend
Update README.md
Merge pull request #293 from mwernimont/master

New legend