cli: update README.md

Author: kcsongor

cli/README.md

@@ -1,19 +1,37 @@
 # NTT cli
 
-To install dependencies:
+## Prerequisites
 
-```bash
-bun install --frozen-lockfile
+- [bun](https://bun.sh/docs/installation)
+
+Depending on the platforms you will deploy on:
+- [foundry](https://book.getfoundry.sh/) (evm)
+- [anchor](https://book.anchor-lang.com/getting_started/installation.html) (solana)
+
+## Installation
+
+Run
+
+``` bash
+curl -fsSL https://raw.githubusercontent.com/wormhole-foundation/example-native-token-transfers/main/cli/install.sh | bash
 ```
 
-To install `ntt` binary:
+The installer will put the `ntt` binary in `$HOME/.bun/bin`, so make sure that directory is included in your `$PATH`. Once `ntt` is installed, it can be updated to the latest release any time by running
 
 ``` bash
-bun link cli
+ntt update
 ```
 
-To run:
+Or to a specific branch by running
 
-```bash
-ntt --help
+``` bash
+ntt update --branch foo
+```
+
+## Development
+
+The easiest way to work on the CLI is to first install using the script above, then clone the repo, and run
+
+``` bash
+ntt update --path path/to/ntt/repo
 ```