strip leading 'g' from git describe hash; close #210
strip leading 'g' from git describe hash; close #210

tbretl/PrairieLearn,PrairieLearn/PrairieLearnHack,PrairieLearn/PrairieLearnHack,tbretl/PrairieLearn,parasgithub/PrairieLearn,rbessick5/PrairieLearn,lotrfan/PrairieLearn,jakebailey/PrairieLearn,tbretl/PrairieLearn,parasgithub/PrairieLearn,rbessick5/PrairieLearn,PrairieLearn/PrairieLearnHack,PrairieLearn/PrairieLearnHack,mwest1066/PrairieLearn,lotrfan/PrairieLearn,PrairieLearn/PrairieLearnHack,kevinwang/PrairieLearn,jakebailey/PrairieLearn,lotrfan/PrairieLearn,lotrfan/PrairieLearn,mwest1066/PrairieLearn,tbretl/PrairieLearn,rbessick5/PrairieLearn,PrairieLearn/PrairieLearnHack,kevinwang/PrairieLearn,mwest1066/PrairieLearn,parasgithub/PrairieLearn,lotrfan/PrairieLearn,mwest1066/PrairieLearn,mwest1066/PrairieLearn,kevinwang/PrairieLearn,tbretl/PrairieLearn,rbessick5/PrairieLearn,parasgithub/PrairieLearn,lotrfan/PrairieLearn,jakebailey/PrairieLearn,parasgithub/PrairieLearn,kevinwang/PrairieLearn,lotrfan/PrairieLearn,jakebailey/PrairieLearn,kevinwang/PrairieLearn,rbessick5/PrairieLearn,kevinwang/PrairieLearn,PrairieLearn/PrairieLearnHack,kevinwang/PrairieLearn,PrairieLearn/PrairieLearnHack