Fix rbenv install
Fix rbenv install

Error was:

    command not found: CC=gcc-4.2

* Set shell to Ruby 1.9.3 after installing it to make sure the following
 `gem` commands are using the correct Ruby.
* Use easier-to-read `--no-document` flag.

sideci-sample/sideci-sample-laptop,akhosravian/laptop,listia/laptop,qq3561501/laptop,karlitxo/laptop,tiy-houston-q3-rails/laptop,akhosravian/laptop,chadbailey59/laptop,listia/laptop,irfanah/laptop,trujunzhang/laptop,obitum/laptop,estoeckli/laptop,Hatlen/laptop,roundhouse/laptop,webdev1001/laptop,mcritchlow/laptop,bhendo/laptop,archaelus/laptop,iainsmith/laptop,policygenius/laptop,hannesfostie/laptop,linkyndy/laptop,Jyaasa/laptop,burningpony/laptop,robodisco/laptop,omahacodeschool/laptop,policygenius/laptop,thoughtbot/laptop,jaisonerick/laptop,RyanMacG/laptop,jopecko/laptop,eightfiveseven/laptop,bsodmike/laptop,sideci-sample/sideci-sample-laptop,patrickmelvin/laptop,damnitjim/laptop,karthick03/laptop,rallygroup/laptop,kewubenduben/laptop,jakt/laptop,paulghaddad/laptop,nickisnoble/laptop,chadbailey59/laptop,kewubenduben/laptop,SpecializedBicycles/laptop,UseFedora/laptop,jaischeema/laptop,schireson/laptop,gobble/laptop,robbyrussell/laptop,ManageIQ/laptop,jjwon/laptop,robbyrussell/laptop,avvo/laptop,inthebestway/laptop,ffleming/laptop,BCoulange/laptop,darrellpratt/laptop,svnlto/laptop,dholdren/laptop,notrab/laptop,ncronquist/laptop,iphilgood/laptop,kickstarter/laptop,frankcash/laptop,dleve123/laptop,wistia/laptop,trujunzhang/laptop,Nunnery/laptop,18thletter/laptop,roundhouse/laptop,timcase/laptop,nikeshashar/laptop,Recombine/laptop,nathansmyth/laptop,jacobsimeon/laptop,jszod/laptop,joshellington/laptop,estoeckli/laptop,griffio/laptop,omc/laptop,clef/laptop,camerondunford/laptop,pygeek/laptop,benliscio/laptop,joshellington/laptop,anongtech/laptop,vorleakchy/laptop,jonr22/laptop,dfang/laptop,hacktiv8/macmini,DRAKUN/laptop,peterberkenbosch/laptop,EpionHealth/laptop,framingeinstein/laptop,paigetech/laptop,fievelk/laptop,ncronquist/laptop,nanoxd/laptop,bkono/laptop,CapeSepias/laptop,P15/laptop,jjwon0/laptop,netguru/laptop,eroluysal/laptop,freistil/laptop,nipe0324/laptop,tonyd256/laptop,agbodike/laptop,karlitxo/laptop,emyth/laptop,jay3126/laptop,lrmunoz/laptop,sphillips/laptop,MAubreyK/laptop,bkono/laptop,ririjin/laptop,cabouffard/laptop,timcase/laptop,SPBTV/laptop,xuebinglee/laptop,Vermonster/laptop,Flightlogger/laptop,Jastrzebowski/laptop,steshaw/laptop,tomtoday/laptop,zBMNForks/laptop,Kajabi/laptop,OKAMca/laptop,GivewellGetwell/laptop,kapziel/laptop,vulk/laptop,massimoksi/laptop,rebaselabs/laptop