doc: update npm README

Author: gengjiawen

wasm/README.md

@@ -1,37 +1,15 @@
+![Rust](https://github.com/gengjiawen/monkey-rust/workflows/Rust/badge.svg)
+[![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/gengjiawen/monkey_rust)
+
 This lib designed for compiling monkey-parser into WebAssembly and
 publishing the resulting package to NPM.
 
-Be sure to check out [other `wasm-pack` tutorials online][tutorials] for other
-templates and usages of `wasm-pack`.
-
-[tutorials]: https://rustwasm.github.io/docs/wasm-pack/tutorials/index.html
-[template-docs]: https://rustwasm.github.io/docs/wasm-pack/tutorials/npm-browser-packages/index.html
-
-## Usage
-
-### Build with `wasm-pack build`
-
-```
-wasm-pack build
-```
-
-### Test in Headless Browsers with `wasm-pack test`
-
-```
-wasm-pack test --headless --firefox
-```
+![The Monkey Programming Language](https://cloud.githubusercontent.com/assets/1013641/22617482/9c60c27c-eb09-11e6-9dfa-b04c7fe498ea.png)
 
-### Publish to NPM with `wasm-pack publish`
+## What’s Monkey?
 
-```
-wasm-pack publish
-```
+Monkey has a C-like syntax, supports **variable bindings**, **prefix** and **infix operators**, has **first-class** and **higher-order functions**, can handle **closures** with ease and has **integers**, **booleans**, **arrays** and **hashes** built-in.
 
-## Batteries Included
+Official site is: https://monkeylang.org/. It's has various implementation languages :). 
 
-* [`wasm-bindgen`](https://github.com/rustwasm/wasm-bindgen) for communicating
-  between WebAssembly and JavaScript.
-* [`console_error_panic_hook`](https://github.com/rustwasm/console_error_panic_hook)
-  for logging panic messages to the developer console.
-* [`wee_alloc`](https://github.com/rustwasm/wee_alloc), an allocator optimized
-  for small code size.
+There is a book about learning how to make an interpreter: [Writing An Interpreter In Go](https://interpreterbook.com/#the-monkey-programming-language). This is where the Monkey programming language come from.