update gemspec to include the newly added files to manifest
update gemspec to include the newly added files to manifest

WOODDREAM/try,kevinsawicki/grit,shark12345/abc,gitcafe-dev/grit,isabanin/grit,kevinsawicki/grit,jinmm1992/hope,HrishikeshSingh/testmodulerepo,mojombo/grit,jvirguezss/SS-DEVSS,abicky/grit,qijianbo/hub,shark12345/mygit,brynary/grit,JessRudder/grit,lyk4411/test,flycutter/grit,flycutter/grit,Arjunduggal88/first,wykeham/tr2,feistar/RepoLearning,duanjun/test,thommay/grit,suoqiangqiang/demofirst,enosje/Teste,redronin/grit,wwjun110/grit,brynary/grit,VasiliyGryaznoy/test,bpug/test,Max1mov/grit,yqb95/mygrit,rmendez1972/grit,eciuca/first-repo,qijianbo/hub,guagualvcha/ticgit,wwjun110/grit,WOODDREAM/try,wuligit/test1,KimGeoNam/geonam,thommay/grit,gitlabhq/grit,Smvel/test,AkiraHash/grit,riyad/grit,rgroux/grit,pravinvanmore/restserver,moodmass/grit,HrishikeshSingh/testmodulerepo,gitlabhq/grit,jecotany/test,gitcafe-dev/grit,saulide/testGit,jecotany/test,RyantChan/testweb,xiaodie/example,izcms/testgit,saulide/testGit,sburenko86/grit,renatoramiro/grit,wenwj/111,izcms/testgit,isabanin/grit,VasiliyGryaznoy/test,schacon/grit,rgroux/grit,enosje/Teste,wykeham/tr2,ckw1375/test,shark12345/mygit,sebastian-schulze/grit,jegj/Grit,mtinet/grit,rmendez1972/grit,Max1mov/grit,shark12345/abc,Smvel/test,KimGeoNam/geonam,ManojkumarMenon/grit,github/grit,wwjun110/grit,lucianmanciu/MyGrit,wenwj/111,wlacawy/test,WOODDREAM/try,user45/grit,nickle-ye/my_grit,mtinet/grit,JoeMburu/mygrits,shaomengchao/pb,andreystadnik/testrepo,METROSTATE/mygrit,davetron5000/grit,lyk4411/test,Philipp1899/test_project,patientslikeme/grit,adamlerer/grit,suoqiangqiang/demofirst