updated developer's guide a bit
updated developer's guide a bit

RestExpress/RestExpress,cailin186/RestExpress,jyx140521/RestExpress,layerhq/RestExpress,cailin186/RestExpress,jasonchaffee/RestExpress,jasonchaffee/RestExpress,geronimo-iia/restexpress,layerhq/RestExpress,RestExpress/RestExpress,jyx140521/RestExpress