check for wget and gpg before proceeding
check for wget and gpg before proceeding

wget and gpg are not necessarily present (such as a livecd image), but the script proceeds anyway and leaves things in an inconsistent state, causing confusing errors if it's re-run.  This bails out early if the dependencies are not present.
zhang0137/init,coreos/init,coreos/init,nicescale/init,BugRoger/init,nicescale/init,coreos/init,BugRoger/init,endocode/init,zhang0137/init,endocode/init