Add README

README.md

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+<div align="center">
+    <br/>
+    <p>
+        <img src="resources/img/rxcc.png"
+            title="rxcc" alt="rxcc logo" width="120" />
+        <h1>rxcc - Rochester X C Compiler</h1>
+    </p>
+    <p width="120">
+        An x86 C compiler written in Swift.
+    </p>
+    <br/>
+</div>
+<!--Readme header inspired by https://helium.computer-->
+
+# Overview
+Have you ever woken up one day and said to yourself, "Y'know what? I'd really like to build a compiler today."?
+
+Could be just me.
+
+Well, ever since that fateful day, I've been chiseling away at this mammoth task, adding functionality in stages by following [this series](https://norasandler.com/2017/11/29/Write-a-Compiler.html).
+
+# Features
+> [!NOTE]
+> This project is under active development, and the implemented features are rapidly changing.
+
+Here is a list of the currently implemented C language features:
+* __Unary Operators__: The ~ (bitwise compliment), - (negation), and ! (logical negation) operators are implemented for integers, and can be applied to any term.
+* __Arithmetic Operators__: The + (addition), - (subtraction), * (multiplication), and / (division) operators are implemented for integers, parsed according to their precedence levels in C.
+* __Functions__: Each file currently supports exactly one function (so you'd be wise to make it "main"), with exactly one statement: an integer return statement. So yeah, not so useful yet.
+* __Variables__: To be implemented soon.
+