Updated readme

README.md

@@ -1,14 +1,14 @@
-expression := literal | binary | grouping
+# Bits Runner Builder
 
-literal := INTEGER
+## Overview
+Bits Runner Builder (brb) is a compiler for Bits Runner Code (brc) language, which has been designed for the Bits Runner Builder operating system. It aims to be a low-level language, which can be a replacement for C while providing a revised syntax and a couple of quality of life improvement. It's a simple system programming language, so no class hierarchies, templates, or other unnecessary fluff.
 
-grouping := "(" expression ")"
+It has been been built on top of LLVM.
 
-binary := expression operator expression
+## Show me the code!
 
-operator := "+" | "-" | "*" | "/" | "%"
+### Data
 
-expression 
+### Control flow
-term    factor "+" | "-" factor
+
-factor  primary  "*" | "/" primary
+### Functions
-primary INTEGER | "(" expression ")"