general: add build instructions

README.md

@@ -5,3 +5,18 @@ A "competitor" of sorts to magicalsoup/highschool.
 The LaTeX formatting in this repository uses `$...$` for inline math, and `$$...$$` for multi-line math. MathJax is used to render this LaTeX.
 
 Admonitions can be added with documentation available [here](https://squidfunk.github.io/mkdocs-material/reference/admonitions/#usage).
+
+## Dependencies
+
+ - `mkdocs`
+ - `mkdocs-material`
+ - `mkdocs-material-extensions`
+ - `python-markdown-math`
+
+## Build instructions
+
+MkDocs is used to build the site.
+
+```
+mkdocs build
+```