Revert "Unpin react-sdk and js-sdk"

I messed this up and removed staticfiles.js by accident

This reverts commit 21334cab28.

scripts/staticfiles.js

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+// copy static files from node_modules to the vector directory
+//
+
+var fs = require('fs-extra');
+
+function exists(f) {
+    try {
+        fs.statSync(f);
+        return true;
+    } catch(e) {
+        return false;
+    }
+}
+
+const olm = 'node_modules/olm/olm.js';
+if (exists(olm)) {
+    console.log("copy", olm, "-> vector");
+    fs.copySync(olm, 'vector/olm.js');
+}