docs: add copy-paste GitHub install commands for code-explainer

Author: baboonzero

PUBLISHING.md

@@ -16,14 +16,14 @@ git push -u origin main
 Use the Skills CLI install pattern:
 
 ```bash
-npx skills add https://github.com/<your-org-or-user>/code-explainer --skill code-explainer
+npx skills add https://github.com/baboonzero/code-explainer --skill code-explainer
 ```
 
 Or with Codex system installer script:
 
 ```bash
 python ~/.codex/skills/.system/skill-installer/scripts/install-skill-from-github.py \
-  --repo <your-org-or-user>/code-explainer \
+  --repo baboonzero/code-explainer \
   --path code-explainer
 ```
 

README.md

@@ -146,6 +146,22 @@ python scripts/analyze.py analyze \
   --enable-web-enrichment true
 ```
 
+## Install From GitHub (For Other Developers)
+
+Using Skills CLI:
+
+```bash
+npx skills add https://github.com/baboonzero/code-explainer --skill code-explainer
+```
+
+Using Codex skill installer:
+
+```bash
+python ~/.codex/skills/.system/skill-installer/scripts/install-skill-from-github.py \
+  --repo baboonzero/code-explainer \
+  --path code-explainer
+```
+
 ## Install Into Codex
 
 Use the installer script: