Create README.md files

packages/typescript/assemble-registry-url/README.md

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+# assemble-registry-url
+
+Assemble registry URLs from given package name
+
+## Usage
+
+```javascript
+import assemble from 'assemble-registry-url'
+console.log(assemble({package: 'package-name'}))
+```
+
+It will print:
+
+```json
+{
+  "allVersionsURL": "https://registry.npmjs.org/package-name/versions",
+  "latestVersionURL": "https://registry.npmjs.org/package-name/latest",
+  "package": "package-name",
+  "packageURL": "https://registry.npmjs.org/package-name",
+  "registry": "https://registry.npmjs.org",
+  "registryURL": "https://registry.npmjs.org",
+  "setPackage": [Function],
+  "setRegistry": [Function],
+  "setVersion": [Function],
+  "validPackageName": true,
+  "validRegistry": true,
+}
+```
+
+## License
+
+[MIT](https://git.io/vhaEz) © [Hoàng Văn Khải](https://github.com/KSXGitHub)

packages/typescript/available-npm-name/README.md

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+# available-npm-name
+
+Check if any package name is taken
+
+## Usage
+
+```sh
+available-npm-name package-name-1 package-name-2 ...
+```
+
+## License
+
+[MIT](https://git.io/vhaEz) © [Hoàng Văn Khải](https://github.com/KSXGitHub)