Add all-contributors for GitHub contributions (#2447)

* try all contributors

* add commit rules

.all-contributorsrc

@@ -0,0 +1,15 @@
+{
+  "projectName": "leo",
+  "projectOwner": "AleoHQ",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": ["README.md"],
+  "imageSize": 100,
+  "contributorsPerLine": 7,
+  "commit": false,
+  "commitType": "docs",
+  "commitConvention": "angular",
+  "linkToUsage": true,
+  "skipCi": true,
+  "contributors": []
+}

README.md

@@ -8,6 +8,7 @@
     <a href="https://circleci.com/gh/AleoHQ/leo"><img src="https://circleci.com/gh/AleoHQ/leo.svg?style=svg&circle-token=6e9ad6d39d95350544f352d34e0e5c62ef54db26"></a>
     <a href="https://codecov.io/gh/AleoHQ/leo"><img src="https://codecov.io/gh/AleoHQ/leo/branch/testnet3/graph/badge.svg?token=S6MWO60SYL"/></a>
     <a href="https://discord.gg/5v2ynrw2ds"><img src="https://img.shields.io/discord/700454073459015690?logo=discord"/></a>
+    <a href="https://allcontributors.org/"><img src="https://img.shields.io/github/all-contributors/AleoHQ/leo?color=ee8449&style=flat-square"/></a>
 </p>
 
 Leo is a functional, statically-typed programming language built for writing private applications.
@@ -22,7 +23,8 @@ Leo is a functional, statically-typed programming language built for writing pri
 * [4. Troubleshooting](#4-troubleshooting)
 * [5. Documentation](#5-documentation)
 * [6. Contributing](#6-contributing)
-* [7. License](#7-license)
+* [7. Contributors](#7-contributors)
+* [8. License](#8-license)
 
 
 ## 1. Overview
@@ -112,5 +114,131 @@ Please see our guidelines in the [developer documentation](./CONTRIBUTING.md)
 
 Thank you for helping make Leo better!
 
-## 7. License 
+<p align="center">
+    <img width="1412" src="https://cdn.aleo.org/leo/banner.png">
+</p>
+
+<h1 align="center">The Leo Programming Language</h1>
+
+<p align="center">
+    <a href="https://circleci.com/gh/AleoHQ/leo"><img src="https://circleci.com/gh/AleoHQ/leo.svg?style=svg&circle-token=6e9ad6d39d95350544f352d34e0e5c62ef54db26"></a>
+    <a href="https://codecov.io/gh/AleoHQ/leo"><img src="https://codecov.io/gh/AleoHQ/leo/branch/testnet3/graph/badge.svg?token=S6MWO60SYL"/></a>
+    <a href="https://discord.gg/5v2ynrw2ds"><img src="https://img.shields.io/discord/700454073459015690?logo=discord"/></a>
+    <a href="https://allcontributors.org/"><img src="https://img.shields.io/github/all-contributors/AleoHQ/leo?color=ee8449&style=flat-square"/></a>
+</p>
+
+Leo is a functional, statically-typed programming language built for writing private applications.
+
+## <a name='TableofContents'></a>Table of Contents
+
+* [1. Overview](#1-overview)
+* [2. Build Guide](#2-build-guide)
+  * [2.1 Install Rust](#21-install-rust)
+  * [2.2 Build from Source Code](#22-build-from-source-code)
+* [3. Quick Start](#3-quick-start)
+* [4. Troubleshooting](#4-troubleshooting)
+* [5. Documentation](#5-documentation)
+* [6. Contributing](#6-contributing)
+* [7. License](#7-license)
+
+
+## 1. Overview
+
+Welcome to the Leo programming language.
+
+Leo provides a high-level language that abstracts low-level cryptographic concepts and makes it easy to
+integrate private applications into your stack. Leo compiles to circuits making zero-knowledge proofs practical.
+
+The syntax of Leo is influenced by traditional programming languages like JavaScript, Scala, and Rust, with a strong emphasis on readability and ease-of-use.
+Leo offers developers with tools to sanity check circuits including unit tests, integration tests, and console functions.
+
+Leo is one part of a greater ecosystem for building private applications on [Aleo](https://aleo.org/).
+The language is currently in an alpha stage and is subject to breaking changes.
+
+## 2. Build Guide
+
+### 2.1 Install Rust
+
+We recommend installing Rust using [rustup](https://www.rustup.rs/). You can install `rustup` as follows:
+
+- macOS or Linux:
+  ```bash
+  curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+  ```
+
+- Windows (64-bit):
+
+  Download the [Windows 64-bit executable](https://win.rustup.rs/x86_64) and follow the on-screen instructions.
+
+- Windows (32-bit):
+
+  Download the [Windows 32-bit executable](https://win.rustup.rs/i686) and follow the on-screen instructions.
+
+### 2.2 Build from Source Code
+
+We recommend installing Leo by building from the source code as follows:
+
+```bash
+# Download the source code
+git clone https://github.com/AleoHQ/leo
+cd leo
+
+# Install 'leo'
+$ cargo install --path .
+```
+
+Now to use leo, in your terminal, run:
+```bash
+leo
+```
+
+## 3. Quick Start
+
+Use the Leo CLI to create a new project
+
+```bash
+# create a new `hello-world` Leo project
+leo new helloworld
+cd helloworld
+
+# build & setup & prove & verify
+leo run
+```
+
+The `leo new` command creates a new Leo project with a given name.
+
+The `leo run` command will compile the program into Aleo instructions and run it.
+
+Congratulations! You've just run your first Leo program.
+
+## 4. Troubleshooting
+If you are having trouble installing and using Leo, please check out our [guide](docs/troubleshooting.md).
+
+If the issue still persists, please [open an issue](https://github.com/AleoHQ/leo/issues/new/choose).
+
+## 5. Documentation
+
+* [Hello World - Next Steps](https://developer.aleo.org/leo/hello)
+* [Leo Language Documentation](https://developer.aleo.org/leo/language)
+* [Leo ABNF Grammar](./docs/grammar/abnf-grammar.txt)
+* [Homepage](https://developer.aleo.org/overview/)
+
+## 6. Contributing
+
+Please see our guidelines in the [developer documentation](./CONTRIBUTING.md)
+
+Thank you for helping make Leo better!
+
+## 7. Contributors
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+## 8. License 
 [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](./LICENSE.md)