GUI: use a local installation of gulp

Change-Id: I5ef201aaf157e630610492e92d910c582ade6513
diff --git a/tools/gui/package.json b/tools/gui/package.json
index 2596add..4c2aeb0 100644
--- a/tools/gui/package.json
+++ b/tools/gui/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "build": "gulp build"
+    "build": "./node_modules/gulp/bin/gulp.js build"
   },
   "author": "",
   "license": "ISC",
diff --git a/web/gui/onos-gui-build b/web/gui/onos-gui-build
index b913f5b..8f6a2cb 100755
--- a/web/gui/onos-gui-build
+++ b/web/gui/onos-gui-build
@@ -7,10 +7,6 @@
 export PATH=$NODEJS_HOME/bin:$PATH
 
 cd $ONOS_ROOT/tools/gui
-# Install NPM Global packages
-ONOS_NPM_GLOBAL_DEPENDENCIES="gulp-cli gulp"
-echo "Installing NPM Global dependencies: $ONOS_NPM_GLOBAL_DEPENDENCIES"
-npm install -g ${ONOS_NPM_GLOBAL_DEPENDENCIES} --loglevel=error
 
 # Install Project Dependencies
 echo "Installing project dependencies"