message: Upload text files with correct encoding
  Fixes
diff: @@ -461,7 +461,7 @@ IrcBridge.prototype.uploadTextFile = function(fileName, plaintext, req) {
  return this._bridge.getIntent().getClient().uploadContent({
  stream: new Buffer(plaintext),
  name: fileName,
  - type: "text/plain",
  + type: "text/plain; charset=utf-8",
  });
  };
  