upload to hash rename expressjs middleware

This middleware renames file uploads to names based on hash of file content

Usage

set hash option for bodyParser, include upload-hash-name-middleware (after bodyParser)

var app = express.createServer();
app.use(express.bodyParser({hash: 'md5'}));
app.use(require('upload-hash-name-middleware'));

that's all now all uploads will be stored by its hashes as name.