Added files for Juan

ExACTRegressionScripts/node_modules/xlsx/xlsxworker.js

@@ -0,0 +1,14 @@
+/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
+importScripts('dist/shim.min.js');
+/* uncomment the next line for encoding support */
+importScripts('dist/cpexcel.js');
+importScripts('xlsx.js');
+postMessage({t:"ready"});
+
+onmessage = function (evt) {
+  var v;
+  try {
+    v = XLSX.read(evt.data.d, {type: evt.data.b});
+postMessage({t:"xlsx", d:JSON.stringify(v)});
+  } catch(e) { postMessage({t:"e",d:e.stack||e}); }
+};