Add Pull Request template
Add Pull Request template

oanhnn/deployer,robfrawley/deployer,prosalov/deployer,torinaki/deployer,jverdeyen/deployer,robfrawley/deployer,deployphp/deployer,cjsewell/deployer,vanquang9387/deployer,prosalov/deployer,deployphp/deployer,mbrodala/deployer,vanquang9387/deployer,deployphp/deployer,TheRatG/deployer