docs(readme): Add how to run end2end specs

Author: tebs

README.md

@@ -42,6 +42,11 @@ Development
 npm start
 ```
 
+Run end2end tests
+```bash
+npm run test:features
+```
+
 ## DevTools
 
 Toggle DevTools:

package.json

@@ -9,7 +9,8 @@
     "email": "uesteibar@gmail.com"
   },
   "contributors": [
-    "Marcio Barrios <marciobarrios@gmail.com>"
+    "Marcio Barrios <marciobarrios@gmail.com>",
+    "Teba Rojo <qatrera@gmail.com>"
   ],
   "repository": "https://github.com/sloth-tools/sloth-app",
   "license": "MIT",