Bumping highlight dep

Author: kenwheeler

package.json

@@ -13,7 +13,7 @@
   "license": "ISC",
   "dependencies": {
     "alt": "0.16.10",
-    "highlight.js": "8.6.0",
+    "highlight.js": "8.8.0",
     "hjs-webpack": "2.8.1",
     "lodash": "3.9.3",
     "normalize.css": "3.0.3",