chore(package): update rollup to version 2.10.0

Closes #8

Author: greenkeeper[bot]

package.json

@@ -23,7 +23,7 @@
     "husky": "^1.1.2",
     "jest": "^23.6.0",
     "mocha": "^5.2.0",
-    "rollup": "^0.66.6"
+    "rollup": "^2.10.0"
   },
   "peerDependencies": {
     "react": "^16.7.0-alpha.0",