tests: Remove global gulp dep

package.json

@@ -11,12 +11,16 @@
     "index.html",
     "learn.json"
   ],
+  "scripts": {
+    "test-server": "gulp test-server &",
+    "gulp": "gulp"
+  },
   "dependencies": {
     "express": "^4.10.0"
   },
   "devDependencies": {
     "del": "^0.1.1",
-    "gulp": "^3.8.5",
+    "gulp": "^3.9.0",
     "gulp-autoprefixer": "^1.0.1",
     "gulp-cache": "^0.2.0",
     "gulp-csso": "^0.2.9",

test-runner.sh

@@ -9,10 +9,9 @@ get_changes ()
 	git diff HEAD origin/master --name-only |  awk 'BEGIN {FS = "/"}; {print $1 "/" $2 "/" $3}' | grep -v \/\/ | grep examples | awk -F '[/]' '{print "--framework=" $2}'|uniq
 }
 
-npm i -g gulp
 if [ "$TRAVIS_BRANCH" = "master" ] && [ "$TRAVIS_PULL_REQUEST" = "false" ]
 then
-	gulp
+	npm run gulp
 	git submodule add -b gh-pages https://${GH_OAUTH_TOKEN}@github.com/${GH_OWNER}/${GH_PROJECT_NAME} site > /dev/null 2>&1
 	cd site
 	if git checkout gh-pages; then git checkout -b gh-pages; fi
@@ -32,10 +31,10 @@ else
 	then
 		exit 0
 	else
+	npm run test-server && \
 		cd tooling && \
 		echo $changes | xargs ./run.sh && \
 		cd ../tests && \
-		(gulp test-server &) && \
 		sleep 2 && \
 		echo $changes | xargs ./run.sh
 	fi