docs(README.md): skeleton library

Author: sciborrudnicki

README.md

@@ -176,6 +176,7 @@ Guard
 ----
 
 * [Installation](#installation)
+* [Skeleton](#skeleton)
 * [Callback](#callback)
 * [Check](#check)
   * [typeOf](#typeof)
@@ -207,6 +208,24 @@ Install `@angular-package/type` package with command:
 npm i --save @angular-package/type
 ```
 
+## Skeleton
+
+This project was build with the library[skeleton](https://github.com/angular-package/skeleton), it's just simple generated by angular-cli library with the command
+
+```bash
+ng new skeleton --create-application=false
+```
+
+Simply, copy this package to the folder of skeleton library `packages/type` then you can run commands below.
+
+### Build
+
+Run `ng build type` to build the project. The build artifacts will be stored in the `dist/` directory.
+
+### Running unit tests
+
+Run `ng test type` to execute the unit tests via [Karma](https://karma-runner.github.io).
+
 ## Callback
 
 Default function to handle `callback` of [`ResultCallback`][resultcallback] type.