chore(package): update rollup to version 1.2.2

Closes #22

Author: greenkeeper[bot]

package.json

@@ -87,7 +87,7 @@
     "postcss-strip-inline-comments": "^0.1.5",
     "pump": "^3.0.0",
     "raw-loader": "^0.5.1",
-    "rollup": "^0.67.4",
+    "rollup": "^1.2.2",
     "rollup-plugin-commonjs": "^9.2.0",
     "rollup-plugin-node-resolve": "^3.4.0",
     "rollup-plugin-sourcemaps": "^0.4.2",