Add vcpkg installation instructions

Author: FrankXie

README.md

@@ -128,6 +128,21 @@ git submodule init
 git submodule update
 ```
 
+### Installing SQLiteCpp (vcpkg)
+
+Alternatively, you can build and install SQLiteCpp using [vcpkg](https://github.com/Microsoft/vcpkg/) dependency manager:
+
+```bash or powershell
+git clone https://github.com/Microsoft/vcpkg.git
+cd vcpkg
+./bootstrap-vcpkg.sh
+./vcpkg integrate install
+./vcpkg install sqlitecpp
+```
+
+The SQLiteCpp port in vcpkg is kept up to date by Microsoft team members and community contributors. If the version is out of date, please [create an issue or pull request](https://github.com/Microsoft/vcpkg) on the vcpkg repository.
+
+
 #### Using SQLiteCpp on a system-wide installation
 
 If you installed this package to your system, a `SQLiteCppConfig.cmake` file will be generated & installed to your system.