Add missing file :|

Author: rreusser

src/components/drawing/measure_text.js

@@ -0,0 +1,22 @@
+/**
+* Copyright 2012-2017, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+
+'use strict';
+
+var Drawing = require('../../components/drawing');
+
+module.exports = function measureText(tester, text, font) {
+    var dummyText = tester.append('text')
+        .text(text)
+        .call(Drawing.font, font);
+
+    var bbox = Drawing.bBox(dummyText.node());
+    dummyText.remove();
+    return bbox;
+};