Add README

README.md

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+# Clox
+
+This is my implmementation of the `clox` programming language, as seen from [Crafting Interpreters]. It makes use of the
+[meson] build system. For convenience, there's also a `Makefile` included to simplify the (already pretty simple) meson commands.
+
+### Building
+
+```bash
+make
+```
+
+To run the tests:
+
+```bash
+make test
+```
+
+[Crafting Interpreters]: https://craftinginterpreters.com/
+[meson]: https://mesonbuild.com/