chore(package): update rollup-plugin-commonjs to version 10.0.2

Closes #27

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
     "firebase-tools": "^3.17.7",
     "rollup": "^0.57.1",
     "rollup-plugin-browsersync": "^0.2.6",
-    "rollup-plugin-commonjs": "^9.1.0",
+    "rollup-plugin-commonjs": "^10.0.2",
     "rollup-plugin-copy": "^0.2.3",
     "rollup-plugin-json": "^2.3.0",
     "rollup-plugin-node-builtins": "^2.1.2",