Add olm version to client. Add semicolons.

lib/client.js

@@ -155,6 +155,8 @@ function MatrixClient(opts) {
             opts.sessionStore,
             userId, this.deviceId
         );
+
+        this.olmVersion = Crypto.getOlmVersion();
     }
 }
 utils.inherits(MatrixClient, EventEmitter);