📚 DOC: update dev docs

Author: pettiboy

.gitignore

@@ -9,4 +9,6 @@ tmp
 build
 
 # Dependency directory
-node_modules
+node_modules
+
+.env

.npmignore

@@ -17,3 +17,4 @@ src/
 rollup.config.js
 tsconfig.json
 dev.md
+.env

dev.md

@@ -9,6 +9,12 @@ cd demo-app
 npm link react-ui-scrollspy
 ```
 
+creates a `.tgz`
+
+```bash
+npm pack
+```
+
 ## Commit Messages
 
 https://github.com/ahmadawais/Emoji-Log
@@ -22,3 +28,51 @@ git commit -m "🚀 RELEASE: "
 git commit -m "🤖 TEST: "
 git commit -m "‼️ BREAKING: "
 ```
+
+### GitHub package
+
+```bash
+npm login --registry=https://npm.pkg.github.com/
+```
+
+#### package.json
+
+```json
+"name": "@pettiboy/react-ui-scrollspy",
+.....
+"publishConfig": {
+  "registry": "https://npm.pkg.github.com/"
+},
+"repository": {
+  "type": "git",
+  "url": "git+https://github.com/pettiboy/react-ui-scrollspy.git",
+  "directory": "react-ui-scrollspy"
+},
+"bugs".....
+```
+
+```bash
+npm publish
+```
+
+### npm package
+
+```bash
+npm login
+```
+
+#### package.json
+
+```json
+"name": "react-ui-scrollspy",
+....
+"repository": {
+  "type": "git",
+  "url": "git+https://github.com/pettiboy/react-ui-scrollspy.git"
+},
+"bugs".....
+```
+
+```bash
+npm publish
+```