update contribute.rst doc
update contribute.rst doc

$USER environment variable is no longer needed

51itclub/pelican,iKevinY/pelican,goerz/pelican,ls2uper/pelican,abrahamvarricatt/pelican,JeremyMorgan/pelican,treyhunner/pelican,deanishe/pelican,abrahamvarricatt/pelican,gymglish/pelican,number5/pelican,gymglish/pelican,0xMF/pelican,HyperGroups/pelican,ehashman/pelican,goerz/pelican,number5/pelican,Polyconseil/pelican,ingwinlu/pelican,koobs/pelican,liyonghelpme/myBlog,lazycoder-ru/pelican,eevee/pelican,jvehent/pelican,TC01/pelican,iurisilvio/pelican,kennethlyn/pelican,kernc/pelican,GiovanniMoretti/pelican,koobs/pelican,GiovanniMoretti/pelican,ehashman/pelican,eevee/pelican,douglaskastle/pelican,Polyconseil/pelican,zackw/pelican,11craft/pelican,ehashman/pelican,rbarraud/pelican,btnpushnmunky/pelican,garbas/pelican,alexras/pelican,jimperio/pelican,douglaskastle/pelican,ingwinlu/pelican,iKevinY/pelican,jimperio/pelican,GiovanniMoretti/pelican,Rogdham/pelican,Scheirle/pelican,liyonghelpme/myBlog,JeremyMorgan/pelican,garbas/pelican,karlcow/pelican,crmackay/pelican,lucasplus/pelican,goerz/pelican,levanhien8/pelican,jvehent/pelican,joetboole/pelican,lucasplus/pelican,farseerfc/pelican,crmackay/pelican,deved69/pelican-1,catdog2/pelican,janaurka/git-debug-presentiation,lazycoder-ru/pelican,abrahamvarricatt/pelican,deved69/pelican-1,iurisilvio/pelican,catdog2/pelican,51itclub/pelican,UdeskDeveloper/pelican,liyonghelpme/myBlog,florianjacob/pelican,liyonghelpme/myBlog,lucasplus/pelican,deanishe/pelican,Scheirle/pelican,treyhunner/pelican,levanhien8/pelican,rbarraud/pelican,11craft/pelican,crmackay/pelican,ls2uper/pelican,catdog2/pelican,douglaskastle/pelican,eevee/pelican,karlcow/pelican,jvehent/pelican,11craft/pelican,getpelican/pelican,51itclub/pelican,treyhunner/pelican,simonjj/pelican,HyperGroups/pelican,alexras/pelican,ls2uper/pelican,simonjj/pelican,alexras/pelican,UdeskDeveloper/pelican,sunzhongwei/pelican,florianjacob/pelican,zackw/pelican,getpelican/pelican,deanishe/pelican,rbarraud/pelican,avaris/pelican,jo-tham/pelican,fbs/pelican,janaurka/git-debug-presentiation,UdeskDeveloper/pelican,jo-tham/pelican,kernc/pelican,janaurka/git-debug-presentiation,HyperGroups/pelican,simonjj/pelican,jimperio/pelican,joetboole/pelican,Summonee/pelican,number5/pelican,kernc/pelican,JeremyMorgan/pelican,zackw/pelican,sunzhongwei/pelican,farseerfc/pelican,deved69/pelican-1,TC01/pelican,arty-name/pelican,joetboole/pelican,garbas/pelican,talha131/pelican,Rogdham/pelican,Rogdham/pelican,levanhien8/pelican,kennethlyn/pelican,iurisilvio/pelican,talha131/pelican,btnpushnmunky/pelican,karlcow/pelican,kennethlyn/pelican,gymglish/pelican,sunzhongwei/pelican,ionelmc/pelican,justinmayer/pelican,lazycoder-ru/pelican,Summonee/pelican,liyonghelpme/myBlog,sunzhongwei/pelican,florianjacob/pelican,Summonee/pelican,koobs/pelican,avaris/pelican,TC01/pelican,btnpushnmunky/pelican,Scheirle/pelican