Update README.md

added 2.1

README.md

@@ -166,12 +166,12 @@ See the [open issues](https://github.com/towzeur/PLT_2021/issues) for a list of
     * State implementation
     * Test code coverage
     * Report 1.final
-<!--
+
 * 2.1
     * Report 2.1
     * Render diagram
     * Implemented code to print a rendering of state
-
+<!--
 * 2.2
     * Report 2.2
     * Engine diagram
@@ -264,4 +264,4 @@ Distributed under the MIT License. See [LICENSE](license-url) for more informati
 [cpp-ver-shield]: https://img.shields.io/badge/C%2B%2B-11-blue.svg
 [cpp-ver]: https://en.wikipedia.org/wiki/C%2B%2B11
 
-[version-shield]: https://img.shields.io/badge/version-1.final-blue.svg?cacheSeconds=2592000
+[version-shield]: https://img.shields.io/badge/version-1.final-blue.svg?cacheSeconds=2592000