fix(package): update h2o2 to version 6.0.0

Author: greenkeeper[bot]

package.json

@@ -18,7 +18,7 @@
     "browserify": "^14.0.0",
     "good": "^7.0.2",
     "good-squeeze": "^5.0.0",
-    "h2o2": "^5.1.0",
+    "h2o2": "^6.0.0",
     "hapi": "^16.4.2",
     "hapi-cors-headers": "^1.0.0",
     "inert": "^4.0.0",