Add React 16 to peer dependencies

package.json

@@ -72,6 +72,6 @@
     "htmlparser2": "^3.9.0"
   },
   "peerDependencies": {
-    "react": "^0.13.0 || ^0.14.0 || ^15.0.0"
+    "react": "^0.13.0 || ^0.14.0 || ^15.0.0 || ^16.0.0-0"
   }
 }