revise skill stuff in readme, add scripts to install skill

Author: schpet

README.md

@@ -179,7 +179,7 @@ this cli solves this. it knows what you're working on (via git branches or jj co
 
 ## claude code skill
 
-linear-cli includes a skill for [claude code](https://docs.anthropic.com/en/docs/claude-code) that helps claude use the CLI effectively.
+linear-cli includes [a skill for claude code](https://code.claude.com/docs/en/skills) that helps claude use the CLI effectively. for use cases outside the CLI, it includes instructions to interact directly with the graphql api, including authentication. 
 
 ```bash
 # from claude code

justfile

@@ -24,3 +24,15 @@ tag:
 # cargo-dist - needed to update .github/workflows/release.yml
 dist-generate:
   dist generate
+
+claude-remove-local:
+  -claude plugin remove linear-cli@linear-cli
+  -claude plugin marketplace remove linear-cli
+
+claude-install-local:
+  claude plugin marketplace add ./
+  claude plugin install linear-cli@linear-cli
+
+claude-install-github:
+  claude plugin marketplace add schpet/linear-cli
+  claude plugin install linear-cli@linear-cli