[docs] Added pre-release notes
[docs] Added pre-release notes

raphaelamorim/facebook-clang-plugins,raphaelamorim/facebook-clang-plugins,CJstar/facebook-clang-plugins,wangwei1237/facebook-clang-plugins,caijinyan/facebook-clang-plugins,wangwei1237/facebook-clang-plugins,CJstar/facebook-clang-plugins,raphaelamorim/facebook-clang-plugins,caijinyan/facebook-clang-plugins,CJstar/facebook-clang-plugins,wangwei1237/facebook-clang-plugins,raphaelamorim/facebook-clang-plugins,CJstar/facebook-clang-plugins,wangwei1237/facebook-clang-plugins,caijinyan/facebook-clang-plugins,caijinyan/facebook-clang-plugins