docco and code tweak

Author: roppa

README.md

@@ -350,6 +350,10 @@ fn main() {
 }
 ```
 
+## Tools
+
+- [Rust playground](https://play.rust-lang.org/)
+
 ## Resources
 
 - [Actix api framework](https://actix.rs)

game-of-life/src/game/god.rs

@@ -40,15 +40,5 @@ mod tests {
 }
 
 pub fn is_alive(alive: bool, neighbours: i32) -> bool {
-  if alive {
-    if neighbours == 2 || neighbours == 3 {
-      return true;
-    }
-    return false;
-  } else {
-    if neighbours == 3 {
-      return true;
-    }
-    return false;
-  }
+  return alive && neighbours == 2 || neighbours == 3
 }