Split prompt step in multiple steps
Split prompt step in multiple steps

* add step for app name
* add step for app description
* add step for github user name
* add step for node-webkit
j-hernandez/generator-node-webkit,daemonchen/generator-node-webkit,j-hernandez/generator-node-webkit,teoria/generator-node-webkit,j-hernandez/generator-node-webkit,napalmdev/generator-node-webkit,Dica-Developer/generator-node-webkit,napalmdev/generator-node-webkit,napalmdev/generator-node-webkit,ace68723/generator-node-webkit,ace68723/generator-node-webkit,Dica-Developer/generator-node-webkit,ace68723/generator-node-webkit,Dica-Developer/generator-node-webkit,teoria/generator-node-webkit,teoria/generator-node-webkit,daemonchen/generator-node-webkit,daemonchen/generator-node-webkit