ENH: slightly improved notebook on irradiance functions
Added detail to readme
Merge pull request #2 from bmu/irradiance-notebook

ENH: slightly improved notebook on irradiance functions
Revert "ENH: slightly improved notebook on irradiance functions"
Merge pull request #4 from Sandia-Labs/revert-2-irradiance-notebook

Revert "ENH: slightly improved notebook on irradiance functions"