Add install doc (Fix #238) (#239)

README.md

@@ -216,23 +216,39 @@ Please check the [CMake build instructions](cmake/README.md).
 <a name="quickstart"></a>
 ### Quickstart
 
- - Run `list_cpu_features`
-```sh
-cmake -S. -Bbuild -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release
-cmake --build build --config Release -j
-./build/list_cpu_features --json
-```
+- Run `list_cpu_features`
+  ```sh
+  cmake -S. -Bbuild -DBUILD_TESTING=OFF -DCMAKE_BUILD_TYPE=Release
+  cmake --build build --config Release -j
+  ./build/list_cpu_features --json
+  ```
 
-_Note_: Use `--target ALL_BUILD` on the second line for `Visual Studio` and `XCode`.
+  _Note_: Use `--target ALL_BUILD` on the second line for `Visual Studio` and `XCode`.
 
- - run tests
-```sh
-cmake -S. -Bbuild -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug
-cmake --build build --config Debug -j
-cmake --build build --config Debug --target test
-```
+- run tests
+  ```sh
+  cmake -S. -Bbuild -DBUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Debug
+  cmake --build build --config Debug -j
+  cmake --build build --config Debug --target test
+  ```
 
-_Note_: Use `--target RUN_TESTS` on the last line for `Visual Studio` and `--target RUN_TEST` for `XCode`.
+  _Note_: Use `--target RUN_TESTS` on the last line for `Visual Studio` and `--target RUN_TEST` for `XCode`.
+
+
+- install `cpu_features`
+  ```sh
+  cmake --build build --config Release --target install -v
+  ```
+
+  _Note_: Use `--target INSTALL` for `Visual Studio`.
+
+  _Note_: When using `Makefile` or `XCode` generator, you can use
+  [`DESTDIR`](https://www.gnu.org/software/make/manual/html_node/DESTDIR.html)
+  to install on a local repository.<br>
+  e.g.
+  ```sh
+  cmake --build build --config Release --target install -v -- DESTDIR=install
+  ```
 
 <a name="bindings"></a>
 ## Community bindings