Add fail fast option
Add fail fast option

Fail the script if a command inside it fails to prevent a install with exitcode 0 even when commands in it are failing.
ironhack/hackmd,PeterDaveHello/hackmd,Rwing/hackmd,Yukaii/hackmd,jccrofty30/hackmd,ironhack/hackmd,jackycute/HackMD,PeterDaveHello/hackmd,aswathyjacob8/newtest,aswathyjacob8/newtest,aswathyjacob8/newtest,jccrofty30/hackmd,PeterDaveHello/hackmd,jackycute/HackMD,ironhack/hackmd,Yukaii/hackmd,Rwing/hackmd,Rwing/hackmd,hackmdio/hackmd,jccrofty30/hackmd,jackycute/HackMD,hackmdio/hackmd,hackmdio/hackmd,Yukaii/hackmd