GPII-91: updating build script to run 'npm install' in addition to cloning universal.
GPII-91: simplified build.sh according to @kaspermarkus's comments
Merge pull request #19 from yzen/GPII-91

GPII-91: updating build script to run 'npm install' in addition to cloning the universal repository. This is a required chance after https://github.com/GPII/universal/pull/77