upload image to s3

lib/config.js

@@ -59,6 +59,15 @@ var documentmaxlength = config.documentmaxlength || 100000;
 // image upload setting, available options are imgur/s3/filesystem
 var imageUploadType = config.imageUploadType || 'imgur';
 
+var s3Keys = ['accessKeyId', 'secretAccessKey', 'region'];
+config.s3 = config.s3 || {};
+var s3 = s3Keys.reduce(function(prev, cur) {
+    prev[cur] = config.s3[cur];
+    return prev;
+}, {});
+
+var s3bucket = config.s3.bucket;
+
 // auth
 var facebook = (process.env.HMD_FACEBOOK_CLIENTID && process.env.HMD_FACEBOOK_CLIENTSECRET) ? {
     clientID: process.env.HMD_FACEBOOK_CLIENTID,
@@ -143,5 +152,7 @@ module.exports = {
     dropbox: dropbox,
     google: google,
     imgur: imgur,
-    imageUploadType: imageUploadType
+    imageUploadType: imageUploadType,
+    s3: s3,
+    s3bucket: s3bucket
 };