This is a copy of Boost that is used to build React Native (Android) from source. It includes just the Boost source code (without the docs, for example) so that downloading and extracting the files doesn't take too long.
You probably don't want to directly use this repository. Its sole purpose is to distribute the Boost code for building React Native.
First, download a new version of Boost, e.g.: http://www.boost.org/users/history/version_1_63_0.html
Then create a dummy commit and a git tag so you can create a new release.
React Native build tools (Gradle) expect specific folder structure. Run this command to get a .tar.gz file:
tar -cvzf boost_1_63_0.tar.gz boost_1_63_0/
Then drag&drop the tar.gz file to the releases page.
The Boost Software License 1.0 is included with this repository and its releases.