Update README.md

Author: tom-sherman

packages/cli/README.md

@@ -10,7 +10,43 @@ deno install --global --allow-all jsr:@lpm/cli --name lpm
 
 ## Usage
 
+### `add <nsid | pattern>`
+
+
+```
+lpm add app.bsky.feed.post
+lpm add app.bsky.actor.*
+```
+
+Lexicons are stored in `./lexicons` along with a manifest at `./lexicons.json`.
+
+Supports wildcards in the last segment.
+
+### `fetch`
+
 ```
-lpm add app.bsky.feed.getPosts
 lpm fetch
 ```
+
+Fetches all lexicons defied in `lexicons.json` and their dependencies.
+
+### `view <nsid>`
+
+```
+lpm view app.bsky.feed.post
+```
+
+View metadata about a lexicon such as it's direct dependencies and the authority DID.
+
+### `tree --depth=<number> <nsid>`
+
+```
+lpm tree app.bsky.feed.post
+lpm tree app.bsky.graph.defs --depth 3
+```
+
+Resolves the tree of lexicons starting at a specific NSID. Denotes circular dependencies with a yellow circle.
+
+
+
+