Added a README

README.md

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+# Plonkus
+
+## About
+This is a small hobby language that I created because I was bored.
+It only supports [my own architecture](https://github.com/vanten-s/8bit-computer) but I'm planning to extend it to x86 some day.
+
+## Features
+Currently the language has the following
+- Expressions
+- Scopes
+- Functions
+- Variables
+But more features like
+- If statements
+- Loops
+- Function calls in expressions
+- Comments
+Are coming.
+
+## Syntax
+Here is example of functions, built-ins and variables and Scopes
+
+```plonkus
+fn main {
+    let a = 2;
+    {
+        let a = a + 1;
+        out(a);
+    }
+    test(a);
+    exit();
+}
+
+fn test output {
+    let number_to_output = output;
+    out(number_to_output);
+}
+```
+
+This code prints 3 and then 2.
+