Basic structure of a react SDK and start of an implementation.

src/MatrixClientPeg.js

@@ -0,0 +1,15 @@
+// A thing that holds your Matrix Client
+var Matrix = require("matrix-js-sdk");
+
+var matrixClient = null;
+
+module.exports = {
+    get: function() {
+        return matrixClient;
+    },
+
+    replaceUsingUrl: function(hs_url) {
+        matrixClient = Matrix.createClient(hs_url);
+    }
+};
+