Wrap binariesPromise handling in an if
Wrap binariesPromise handling in an if

Instead of forcing an immediate exit with process.exit(), wrap the
handling of binariesPromise in an `if` statement, allowing the script to
exit on its own if passed the new option.

t9md/atom,andrewleverette/atom,liuderchi/atom,t9md/atom,andrewleverette/atom,stinsonga/atom,liuderchi/atom,atom/atom,stinsonga/atom,brettle/atom,andrewleverette/atom,PKRoma/atom,atom/atom,liuderchi/atom,Mokolea/atom,PKRoma/atom,atom/atom,liuderchi/atom,t9md/atom,brettle/atom,Mokolea/atom,PKRoma/atom,stinsonga/atom,Mokolea/atom,stinsonga/atom,brettle/atom