fix files.write

Author: daviddias

src/index.js

@@ -253,7 +253,15 @@ function IpfsAPI (host_or_multiaddr, port) {
       return requestAPI('files/rm', path, opts, null, cb)
     },
     read: argCommand('files/read'),
-    write: argCommand('files/write'),
+    // write: argCommand('files/write'),
+    write: function (pathDst, files, opts, cb) {
+      if (typeof (opts) === 'function' && cb === undefined) {
+        cb = opts
+        opts = {}
+      }
+
+      return requestAPI('files/write', pathDst, opts, files, cb)
+    },
     mv: argCommand('files/mv')
   }
 }