made changes to modeling.tex Merge branch 'master' of github.com:SUNY-SDE-2015/REU15
made changes to modeling.tex
Merge branch 'master' of github.com:SUNY-SDE-2015/REU15

SUNY-SDE-2015/REU15,SUNY-SDE-2015/REU15,SUNY-SDE-2015/REU15,SUNY-SDE-2015/REU15