updated README

README.md

@@ -4,6 +4,8 @@
 
 Let's explain what a **[closure](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Closures)** is by writing a JavaScript interpreter in JavaScript.
 
+Try it here: https://tonicdev.com/npm/the-super-tiny-interpreter
+
 This project is still a **work in progress**, but feel free to poke around and check out the unit tests.
 
 ## Disclaimer
@@ -64,7 +66,7 @@ The goal of this project is **not** to make a spec-compliant or blazing-fast int
 8. Variable Declaration Statement
  - Notice that we only support `const` for now and there's NO mutation (assignment) in our language.
  - That means we can initialize stuff once and only once
- - And of course `const foo` is not valid JavaScript
+ - And of course `const foo;` is not valid JavaScript
  - If you are familiar with Scheme/OCaml, then `const LHS = RHS` behaves just like a `letrec`.
 
  ```javascript