begin simple docs

Author: matcool

README.md

@@ -1,3 +1,21 @@
 # Result
 
-A result class for C++ implemented mainly for Geode.
+A result class for C++ implemented mainly for Geode.
+
+The purpose of the class is wrapping the return value of a function which may fail, thus passing the error as part of the return type.
+
+The design of this library is heavily inspired by [rust's Result type](https://doc.rust-lang.org/std/result/)
+
+## Example
+
+```cpp
+Result<int> integerDivision(int a, int b) {
+    if (b == 0)
+        return Err("Division by zero");
+    return Ok(a / b);
+}
+
+int value = integerDivision(3, 2).unwrap(); // 1
+value = integerDivision(3, 0).unwrap(); // Throws a runtime error
+value = integerDivision(3, 0).unwrapOr(0); // 0
+```