master branch might not exist
master branch might not exist

After a fresh install I was unable to run the installer again. It was breaking with the error

error: branch 'master' not found.

my fix makes sure that the installer continues after that.
psychoss/nvm,kumaria/nvm,dfackler/nvm,creationix/nvm,jaawerth/nvm,ljharb/nvm,ljharb/nvm,parasaro92/nvm,reybango/nvm,vinaykaradia/clone-nvm,lukechilds/nvm,cirosantilli/nvm,nontage24/nvm,edwmurph/nvm,IonicaBizauKitchen/nvm,cirosantilli/nvm,sjfkai/nvm,kmctown/nvm,Theodeus/nvm,PeterDaveHello/nvm,gtdeng/nvm,cjac/nvm,mirydz/nvm,wskplho/nvm,egilkh/nvm,misterdjules/nvm,tianzhihen/nvm,Richardphp/nvm,bbuck/nvm,hanhailong/nvm,creationix/nvm,DigitallySeamless/nvm,wahyutaufik/nvm,Kuzirashi/nvm,SampleLiao/nvm,slariviere/nvm,wahyutaufik/nvm,williamboman/nvm,WY08271/nvm,greyhwndz/nvm,Kuzirashi/nvm,michael-ni/nvm,chinazhaghai/nvm,mmorejon/nvm,reybango/nvm,chinazhaghai/nvm,woss/nvm,parasaro92/nvm,jhliberty/nvm,JasonChrYoung/nvm,tianzhihen/nvm,LeeLovCY/nvm,diegofcb10/nvm,williamboman/nvm,domenicosolazzo/nvm,cnpm/nvm,scq000/nvm,kumaria/nvm,thomasf/nvm,jbergstroem/nvm,JanChw/nvm,wskplho/nvm,fnogatz/swivm,JanChw/nvm,egilkh/nvm,woss/nvm,LeeLovCY/nvm,joneit/nvm,WY08271/nvm,bevacqua/nvm,cnpm/nvm,hkdobrev/nvm,christophercaburog/nvm,domenicosolazzo/nvm,tlevine/nvm,PeterDaveHelloKitchen/nvm,gtdeng/nvm,SampleLiao/nvm,pmq20/nvm,icyflame/nvm,jaawerth/nvm,hanhailong/nvm,owen-it/nvm,joneit/nvm,dfackler/nvm,christophercaburog/nvm,mirydz/nvm,modulexcite/nvm,cjac/nvm,scq000/nvm,owen-it/nvm,youleiy/nvm,bevacqua/nvm,Ingelheim/nvm,NicCollins/nvm,elrasguno/nvm,psychoss/nvm,slariviere/nvm,jhliberty/nvm,IonicaBizauKitchen/nvm,thomasf/nvm,Salahudeen/nvm,nontage24/nvm,edwmurph/nvm,DigitallySeamless/nvm,CristianCantoro/nvm,diegofcb10/nvm,Theodeus/nvm,pmq20/nvm,tlevine/nvm,youleiy/nvm,vinaykaradia/clone-nvm,bbuck/nvm,modulexcite/nvm,Ingelheim/nvm,misterdjules/nvm,devedbox/nvm,PeterDaveHello/nvm,icyflame/nvm,mmorejon/nvm,Salahudeen/nvm,greyhwndz/nvm,evocateur/nvm,michael-ni/nvm,Richardphp/nvm,JasonChrYoung/nvm,devedbox/nvm,kmctown/nvm,lukechilds/nvm,PeterDaveHelloKitchen/nvm,evocateur/nvm,CristianCantoro/nvm,elrasguno/nvm,jbergstroem/nvm,hkdobrev/nvm