chore(deps): update dependency rollup to v0.61.0 (#90)

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
     "prettier": "1.13.5",
     "prettier-package-json": "1.6.0",
     "rimraf": "2.6.2",
-    "rollup": "0.60.7",
+    "rollup": "0.61.0",
     "rollup-plugin-babel": "4.0.0-beta.5",
     "rollup-plugin-commonjs": "9.1.3",
     "rollup-plugin-node-resolve": "3.3.0",

yarn.lock

@@ -3942,9 +3942,9 @@ rollup-pluginutils@^2.0.1:
     estree-walker "^0.3.0"
     micromatch "^2.3.11"
 
-rollup@0.60.7:
-  version "0.60.7"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.60.7.tgz#2b62ef9306f719b1ab85a7814b3e6596ac51fae8"
+rollup@0.61.0:
+  version "0.61.0"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.61.0.tgz#9340ce15f6fc4b0cab4b2512ee9e948cd153e737"
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"