fix(package): update chalk to version 2.0.0 (#833)

Author: greenkeeper[bot]

package.json

@@ -19,7 +19,7 @@
     "babel-types": "^6.16.0",
     "babelify": "^7.3.0",
     "babylon": "^6.17.2",
-    "chalk": "^1.1.1",
+    "chalk": "^2.0.0",
     "chokidar": "^1.2.0",
     "concat-stream": "^1.5.0",
     "disparity": "^2.0.0",