Update contribution guidelines

Created a template for more consistent instruction format
Updated the readme to reflect a more structured process for box creation
DO NOT MERGE until box docs have been updated and truffle boxes have been cleaned up

README.md

@@ -1,10 +1,23 @@
 # Blueprint Truffle Box
 
-This box comes with everything you need to create your own Truffle Box.
+This box comes with everything you need to get started on your own Truffle Box.
 
 ## Getting Started
 
-After adding your libraries and code:
+First, fork this repository to create your own repository and make edits. Then, start adding your libraries and code!
+See the [Create your own Truffle Box](https://trufflesuite.com/docs/truffle/advanced/creating-a-truffle-box.html) section of our documentation on how to do so.
+
+## Truffle Site Listing
+
+In order for your box to be published, we have a few requirements to make sure it's in tip-top shape to get released.
+
+Please include detailed instructions to help the community get started using it right away! To do so:
+
+1. Fill out our [template README](./readme-template.md). Note that not everything in the template may apply, or you may need to expand it to best fit your box. See our [Optimism Box](https://github.com/truffle-box/optimism-box) for a great example!
+
+2. Rename the file to `README.md`.
+
+Please also include the images you wish to be displayed with your box. To do so:
 
 1. Delete `box-img-sm.png` and `box-img-lg.png`.
 
@@ -14,4 +27,4 @@ After adding your libraries and code:
 
 4. Customize the box configuration file (`truffle-box.json`) if necessary.
 
-See [the Truffle Box section of our documentation](https://trufflesuite.com/docs/truffle/advanced/creating-a-truffle-box.html) for more info.
+For more detailed instructions on what we look for and how to submit, see the [Truffle Site Listing](https://trufflesuite.com/docs/truffle/advanced/creating-a-truffle-box/#truffle-site-listing) section of our documentation.

readme-template.md

@@ -0,0 +1,53 @@
+# [BOX NAME]
+
+- [Requirements](#requirements)
+- [Setup](#setup)
+    - [Installation](#installation)
+    - [Deployment](#deployment)
+- [Usage](#usage)
+    - [Commands](#commands)
+    - [Testing](#testing)
+- [Support](#support)
+
+[BOX DESCRIPTION: Here you should introduce what your box is, give any background information if necessary, and why people should use it!]
+
+## Requirements
+
+The [BOX NAME] box has the following requirements:
+
+- [REPLACE OR ADD REQUIREMENTS AND HOW TO DOWNLOAD]
+- [Node.js](https://nodejs.org/) 10.x or later
+- [NPM](https://docs.npmjs.com/cli/) version 5.2 or later
+
+Helpful, but optional:
+- An [Infura](https://infura.io/) account and Project ID
+- A [MetaMask](https://metamask.io/) account
+
+## Setup
+
+### Installation
+
+[INSTALLATION INSTRUCTIONS: here you'll talk about using the `truffle unbox` command, as well as any other set up required to get the box installed]
+
+```bash
+$ truffle unbox [BOX NAME]
+```
+### Deployment
+
+[DEPLOYMENT INSTRUCTIONS: here you might talk about how to deploy your project to mainnet or testnet. Consider using [Truffle Dashboards](https://trufflesuite.com/blog/introducing-truffle-dashboard/) so you don't have to copy and paste your private keys. You can find the Truffle Dashboard documentation [here](https://trufflesuite.com/docs/truffle/getting-started/using-the-truffle-dashboard/)]
+
+## Usage
+
+[USAGE INSTRUCTIONS: here you'll talk about how to use your box. This might include anything from common commands or how to test it. Bonus points if you include links to a tutorial on an advanced use case of your box!]
+
+### Commands
+
+[COMMANDS AND WHAT THEY DO]
+
+### Testing
+
+[TESTING INSTRUCTIONS]
+
+## Support
+
+Need help? Get in touch with the Truffle community by posting on [Github Discussions](https://github.com/trufflesuite)!