chore(package): update rollup-plugin-node-resolve to version 4.2.1

Closes #20

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
     "rollup-plugin-json": "^2.3.0",
     "rollup-plugin-node-builtins": "^2.1.2",
     "rollup-plugin-node-globals": "^1.2.0",
-    "rollup-plugin-node-resolve": "^3.3.0",
+    "rollup-plugin-node-resolve": "^4.2.1",
     "rollup-plugin-replace": "^2.0.0",
     "rollup-plugin-typescript2": "^0.12.0",
     "typescript": "^2.8.1",