latest tagcloud in examples

Author: madox2

examples/package.json

@@ -8,7 +8,7 @@
     "react-scripts": "3.2.0",
     "react-ga": "^2.1.2",
     "react-highlight": "^0.12.0",
-    "react-tagcloud": "*",
+    "react-tagcloud": "^2.0.0",
     "whatwg-fetch": "^3.0.0"
   },
   "scripts": {