Build script: find browserify and uglify even if they are not globally installed.
Build script: find browserify and uglify even if they are not globally installed.

molnarg/js-schema,Yerhabe/js-schema,molnarg/js-schema,awei01/js-schema,bradparks/js-schema,awei01/js-schema,bradparks/js-schema,Yerhabe/js-schema