chore(deps): update dependency rollup to v0.61.2 (#94)

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
     "prettier": "1.13.5",
     "prettier-package-json": "1.6.0",
     "rimraf": "2.6.2",
-    "rollup": "0.61.1",
+    "rollup": "0.61.2",
     "rollup-plugin-babel": "4.0.0-beta.5",
     "rollup-plugin-commonjs": "9.1.3",
     "rollup-plugin-node-resolve": "3.3.0",

yarn.lock

@@ -3882,9 +3882,9 @@ rollup-pluginutils@^2.0.1:
     estree-walker "^0.3.0"
     micromatch "^2.3.11"
 
-rollup@0.61.1:
-  version "0.61.1"
-  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.61.1.tgz#65a12f27c2094e6d643fb9cca6a3057190ecc5fe"
+rollup@0.61.2:
+  version "0.61.2"
+  resolved "https://registry.yarnpkg.com/rollup/-/rollup-0.61.2.tgz#30a953736964683a5b8ea952b137a393d84e6302"
   dependencies:
     "@types/estree" "0.0.39"
     "@types/node" "*"