Update README.md

clients/rust/marginfi-cli/README.md

@@ -1,4 +1,47 @@
 # marginfi v2 client
 
-- Display a specific group (defaults to profile group): `cargo run  --features devnet group get`
-- List all groups: `cargo run  --features devnet group get-all`
+## Install the cli
+
+1. Install the latest stable toolchain and set it to default:
+
+```
+rustup default stable-x86_64-apple-darwin
+
+$ rustc --version
+rustc 1.71.1
+```
+
+2. Navigate to the cli folder
+
+3. Make sure to build with the `--all-features` flag and target `x86_64`:
+
+```
+cargo install --path . --target x86_64-apple-darwin --all-features
+```
+
+## Usage
+
+```
+$ mfi
+marginfi-v2-cli 0.1.0
+
+USAGE:
+    mfi [OPTIONS] <SUBCOMMAND>
+
+OPTIONS:
+        --dry-run              Dry run for any transactions involved
+    -h, --help                 Print help information
+    -V, --version              Print version information
+    -y, --skip-confirmation
+
+SUBCOMMANDS:
+    account
+    bank
+    group
+    help                        Print this message or the help of the given subcommand(s)
+    inspect-padding
+    inspect-size
+    inspect-switchboard-feed
+    lip
+    profile
+```