Slashify .gitignore template.
Slashify .gitignore template.

Without the initial `/` all such matches within the repo get ignored,
and without the trailing slash files as well as directories of that
name get ignored. e.g. Specifying `tmp` as well as `test/tmp` without
slashes is redundant, as `tmp` already ignores `test/tmp`, as well as
every other `tmp` and `tmp/`.

ipmobiletech/bundler,patvice/bundler,bronzdoc/bundler,EthanK28/bundler,asymmetric/bundler,schaary/bundler,tgxworld/bundler,e2/bundler,elovelan/bundler,zhangkuaiji/bundler,AiyionPrime/bundler,TimMoore/bundler,jasonkarns/bundler,mattbrictson/bundler-1,schaary/bundler,suhastech/bundler,CorainChicago/bundler,chef/bundler,cstrahan/bundler,sideci-sample/sideci-sample-bundler,joshsoftware/bundler,mvz/bundler,joshsoftware/bundler,Wirachmat/bundler,davydovanton/bundler,masarakki/bundler,pjump/bundler,seanlinsley/bundler,chulkilee/bundler,asymmetric/bundler,frsyuki/bundler,chef/bundler,davydovanton/bundler,robinboening/bundler,Eric-Guo/bundler,vemmaverve/bundler,smlance/bundler,twcctz500000/bundler,agis-/bundler,jaym/bundler,seanlinsley/bundler,danimashu/bundler,pivotal-cf-experimental/bundler,pjump/bundler,jingweno/bundler,steved/bundler,haocafes/bundler,smlance/bundler,dilumnavanjana/bundler,ximus/bundler,asutoshpalai/bundler,roseweixel/bundler,bronzdoc/bundler,haonature888/bundler,cdwort/bundler,byroot/bundler,gregkare/bundler,mattbrictson/bundler-1,cstrahan/bundler,agis-/bundler,lmtim/bundler,nju520/bundler,mpapis/bundler,dilumnavanjana/bundler,carpodaster/bundler,TimMoore/bundler,asutoshpalai/bundler,jaym/bundler,philnash/bundler,haonaturel/bundler,sideci-sample/sideci-sample-bundler,wenderjean/bundler,ipmobiletech/bundler,wenderjean/bundler,robinboening/bundler,CorainChicago/bundler,PG-kura/bundler,neslom/bundler,Wirachmat/bundler,lmtim/bundler,elovelan/bundler,zhangkuaiji/bundler,suhastech/bundler,mpapis/bundler,jingweno/bundler,mdorrance/bundler,bundler/bundler,christer155/bundler,neslom/bundler,Elffers/bundler,mdorrance/bundler,bundler/bundler,ngpestelos/bundler,anil826/bundler,RochesterinNYC/bundler,carpodaster/bundler,christer155/bundler,frsyuki/bundler,ligi/bundler,ngpestelos/bundler,gregkare/bundler,haonature/bundler,jasonkarns/bundler,Teino1978-Corp/Teino1978-Corp-bundler,AiyionPrime/bundler,h4ck3rm1k3/bundler,byroot/bundler,philnash/bundler,kohgpat/bundler,steved/bundler,kohgpat/bundler,RochesterinNYC/bundler,tgxworld/bundler,masarakki/bundler,cdwort/bundler,nju520/bundler,ligi/bundler,mvz/bundler,pivotal-cf-experimental/bundler,chulkilee/bundler,h4ck3rm1k3/bundler,patvice/bundler,danimashu/bundler,EthanK28/bundler,Teino1978-Corp/Teino1978-Corp-bundler,EasonYi/bundler,anil826/bundler,PG-kura/bundler,simplybusiness/bundler,ximus/bundler,simplybusiness/bundler,Elffers/bundler,EasonYi/bundler,roseweixel/bundler,Eric-Guo/bundler