fix(docs): basic example paths and command (#327)

`npm dev` command doesn't exist now
`basic` folder location has changed. So fix it according to that.

Author: hariombalhara

examples/basic/README.md

@@ -8,7 +8,7 @@ Check out the live demo [here](https://craft.js.org/examples/basic/)
 
 ```bash
 > git clone https://github.com/prevwong/craft.js/
-> cd craft.js/packages/examples/basic
+> cd craft.js/examples/basic
 > npm install
-> npm dev
+> npm start
 ```