exporter: exposing dir size

Author: pgte

src/exporter/dir-flat.js

@@ -14,6 +14,7 @@ function dirExporter (node, name, path, pathRest, resolve, dag, parent, depth) {
     depth: depth,
     path: path,
     hash: node.multihash,
+    size: node.size,
     type: 'dir'
   }
 

src/exporter/dir-hamt-sharded.js

@@ -15,6 +15,7 @@ function shardedDirExporter (node, name, path, pathRest, resolve, dag, parent, d
       depth: depth,
       path: path,
       hash: cleanHash(node.multihash),
+      size: node.size,
       type: 'dir'
     }
   }