Add a simple README

README.md

+# `dds` - A Build System and Library Manager
+
+`dds` is a modern take on build system and library dependency management for C
+and C++ projects. It aims to be easy to use for beginners and experts alike,
+and maximally discoverable.
+
+To learn more, refer to [the official
+documentation](https://vector-of-bool.github.io/docs/dds/index.html).