added s3 server

examples/marketplace/S3Server/Procfile

@@ -0,0 +1 @@
+web: node index.js

examples/marketplace/S3Server/index.js

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+var express = require('express');
+var app = express();
+var AWS = require('aws-sdk');
+var url = require('url');
+var querystring = require('querystring');
+var _ = require('underscore');
+
+AWS.config.update({
+    region: "us-east-1"
+});
+
+var s3 = new AWS.S3();
+
+app.set('port', (process.env.PORT || 5000));
+
+app.get('/', function(req, res) {
+    var urlParts = url.parse(req.url)
+    var query = querystring.parse(urlParts.query);
+
+    var params = {
+        Bucket: "hifi-public",
+        Marker: query.assetDir,
+        MaxKeys: 10
+    };
+    s3.listObjects(params, function(err, data) {
+        if (err) {
+            console.log(err, err.stack);
+            res.send("ERROR")
+        } else {
+            var keys = _.pluck(data.Contents, 'Key')
+            res.send({
+                urls: keys
+            });
+        }
+    });
+});
+
+
+app.listen(app.get('port'), function() {
+    console.log('Node app is running on port', app.get('port'));
+})
+
+
+//ozan/3d_marketplace

examples/marketplace/S3Server/package.json

@@ -0,0 +1,18 @@
+{
+    "name": "s3fileserver",
+    "version": "1.0.0",
+    "description": "",
+    "main": "index.js",
+    "scripts": {
+        "test": "echo \"Error: no test specified\" && exit 1"
+    },
+    "author": "eric",
+    "license": "ISC",
+    "dependencies": {
+        "aws-sdk": "^2.2.15",
+        "express": "^4.13.3",
+        "querystring": "^0.2.0",
+        "underscore": "^1.8.3",
+        "url": "^0.11.0"
+    }
+}