Add more doc

Author: JackBoosY

README.rst

@@ -96,13 +96,24 @@ below.
 
 Package manager
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-You can also use package manager vcpkg to build cpython with the following step::
+`vcpkg <https://github.com/microsoft/vcpkg>`_ is a package manager that supports
+all platforms (Windows, Linux and MacOS), you can easily use vcpkg to install
+third-party libraries with one command.
+
+Use the following steps to build cpython::
 
     git clone https://github.com/microsoft/vcpkg.git
     ./bootstrap-vcpkg.bat # for powershell
     ./bootstrap-vcpkg.sh # for bash
     ./vcpkg install python3
 
+See `document <https://github.com/microsoft/vcpkg#getting-started>`_ for more usage information.
+Please clone vcpkg in a non-whitespace and no non-ascii path anywhere.
+To remove vcpkg, you just need to remove the vcpkg folder.
+
+Please use `this link 
+<https://github.com/microsoft/vcpkg/issues/new?assignees=&labels=category%3Aport-bug&template=report-package-build-failure.md&title=%5B%3Cport+name%3E%5D+build+failure>`_
+to create an issue to vcpkg if you encounter any issues.
 
 Profile Guided Optimization
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^