Add Mac and Windows junk to .gitignore
Add Mac and Windows junk to .gitignore

2015SebINF1340/inf1340_2015_asst1,shahyashvi/inf1340_2015_asst1,RodneyLovely/inf1340_2015_asst1,bchan1234/inf1340_2015_asst1,sydneyjia/inf1340_2015_asst1,xueshen3/inf1340_2015_asst1,Momomelo/inf1340_2015_asst1,alyhashahrukh/inf1340_2015_asst1,ecanning/inf1340_2015_asst1,iambillal/inf1340_2015_asst1,yueyueyang/inf1340_2015_asst1,kating26/inf1340_2015_asst1,RosalindLeonoraCooper/inf1340_2015_asst1,gitoffdabus/inf1340_2015_asst1,pakra1/inf1340_2015_asst1,SamanthaE/inf1340_2015_asst1,emilymae/inf1340_2015_asst1,nchah/inf1340_2015_asst1,benevolentprof/inf1340_2015_asst1,rawtoast24/inf1340_2015_asst1,piaoyaoshi/inf1340_2015_asst1,bw8932/inf1340_2015_asst1,eden-r/inf1340_2015_asst1,fumingivy/inf1340_2015_asst1,susanshen/inf1340_2015_asst1,Hirras/inf1340_2015_asst1,peaceandiago/inf1340_2015_asst1,SLiana/inf1340_2015_asst1,zekeyang/inf1340_2015_asst1