chore(package): update gulp-template to version 4.0.0

http://greenkeeper.io/

package.json

@@ -140,7 +140,7 @@
     "gulp-shell": "0.5.2",
     "gulp-sourcemaps": "1.6.0",
     "gulp-tape": "git+https://github.com/marionebl/gulp-tape.git#93abadf0f130afed6c63910ba0acb790ca01aa37",
-    "gulp-template": "3.1.0",
+    "gulp-template": "4.0.0",
     "gulp-util": "3.0.7",
     "highlight.js": "9.2.0",
     "husky": "0.11.4",