while loops

README.md

@@ -211,7 +211,8 @@ User {
 
 ### Control Flow
 
-Control flow in One is still quite limited, as the `for` keyword has not been implemented yet. `if`, `else` and `elif` statements are fully implemented and are written like this.
+Control flow in One isn't fully implemented yet, but it is already functional.
+`if`, `else` and `elif` statements are fully implemented and are written like this:
 
 ```
 let x int = 17;
@@ -225,7 +226,15 @@ if x >= 100 {
 }
 ```
 
-Using parentheses around the condition isn't necessary.
+`while` loops are very similar, and can be written like this:
+
+```
+let i int = 0;
+while i < 10 {
+    print(i);
+    i++;
+}
+```
 
 ### The main function