added catch for file of the same name, returns 400; fixes ibmcnxdev/photosharing-nodejs#190
added catch for file of the same name, returns 400; fixes ibmcnxdev/photosharing-nodejs#190

Milstein/photosharing-nodejs,anthonydresser/photosharing-nodejs,vfrancis/photosharing-nodejs,walidkur/photosharing-nodejs,dlipeles/photosharing-nodejs