Merge pull request #17 from magic-software-lab/greenkeeper/execa-0.7.0

Update execa to the latest version 🚀

Author: eronalves

package.json

@@ -86,7 +86,7 @@
     "codelyzer": "^3.0.1",
     "concurrently": "^3.4.0",
     "core-js": "^2.4.1",
-    "execa": "^0.6.3",
+    "execa": "^0.7.0",
     "glob": "^7.1.1",
     "jasmine-core": "^2.5.2",
     "karma": "^1.5.0",