added citations, authors, styles to main.md
added citations, authors, styles to main.md

ruiwu1990/fire_simulation_education,VirtualWatershed/prms-vegetation-scenarios,VirtualWatershed/prms-vegetation-scenarios,ruiwu1990/fire_simulation_education,ruiwu1990/fire_simulation_education,ruiwu1990/fire_simulation_education,VirtualWatershed/prms-vegetation-scenarios,VirtualWatershed/prms-vegetation-scenarios