Use specific highlighters instead of including all of them. Halves the bundle size

package.json

@@ -38,6 +38,7 @@
     "eslint-plugin-babel": "^3.0.0",
     "eslint-plugin-react": "^3.14.0",
     "github-slugger": "^1.0.1",
+    "highlight.js": "^9.2.0",
     "isomorphic-fetch": "^2.2.0",
     "lodash.debounce": "^4.0.3",
     "minifyify": "^7.1.0",
@@ -45,7 +46,6 @@
     "react-dom": "^0.14.6",
     "react-pure-render": "^1.0.2",
     "remark": "^3.2.0",
-    "remark-highlight.js": "^2.0.0",
     "remark-html": "^2.0.2",
     "remark-slug": "^3.0.1",
     "unist-util-select": "^1.3.0",