Update README and add license

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016-2023 zOS Global Limited and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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 # ERC-5564 and ERC-6538 Contracts
 
 This repo contains the canonical implementations of the ERC-5564 and ERC-6538 contracts:
+
 - [ERC-5564](https://eips.ethereum.org/EIPS/eip-5564) Stealth Addresses: Private, non-interactive transfers and interactions.
 - [ERC-6538](https://eips.ethereum.org/EIPS/eip-6538) Stealth Meta-Address Registry: A registry to map addresses to stealth meta-addresses
 
-## Development
+## Usage
 
 This repo is developed using [Foundry](https://book.getfoundry.sh/).
 
+### Setup
+
+1. Install [Foundry](https://book.getfoundry.sh/getting-started/installation) on your local machine by opening the terminal and running the following command:
+
+```sh
+curl -L https://foundry.paradigm.xyz | bash
+```
+
+2. Clone the repo and navigate to the root directory of the repo.
+
+```sh
+git clone [email protected]:ScopeLift/stealth-address-erc-contracts.git
+cd stealth-address-erc-contracts
+```
+
+### Compile
+
+```sh
+# Build the contracts
+forge build
+```
+
+### Test
+
 ```sh
 # Run the tests
 forge test
 ```
+
+### Coverage
+
+```sh
+# See test coverage
+forge coverage
+```
+
+### Specifications
+
+#### Pre-requisites
+
+1. Install the [rust toolchain](https://www.rust-lang.org/tools/install).
+2. Run `cargo install scopelint`
+
+#### See contract specifications
+
+```sh
+scopelint spec
+```
+
+## Deployments
+
+## Security
+
+## License
+
+Contracts in this repository are released under the [MIT License](https://github.com/ScopeLift/stealth-address-erc-contracts/blob/main/LICENSE).