Fixed broken shell-command in Makefile.
Fixed broken shell-command in Makefile.

insidewarehouse/ejs,kolonse/ejs,kolonse/ejs,jtsay362/solveforall-ejs2,tyduptyler13/ejs,mde/ejs,mmis1000/ejs-promise,zensh/ejs,zensh/ejs,TimothyGu/ejs-tj,cnwhy/ejs,TimothyGu/ejs-tj,insidewarehouse/ejs,rpaterson/ejs,operatino/ejs,cnwhy/ejs,xanxiver/ejs