Copies of images are getting stored locally in the server

[aravindkk]

I had raised a question on SO(http://stackoverflow.com/questions/25143525/can-we-configure-multer-to-not-store-files-locally-and-only-for-using-req-files), and will implement the same.

[aravindkk]

Setting inMemory: true in the multer setup options should fix this. I'll test this and then merge it.