More docs

Readme.md

@@ -8,7 +8,7 @@ You need to have opencv4 installed, then run
 make
 ```
 
-That's it, all you need to do now is run 
+To use the optimzied version, you might need to increase the size of the stack. That's it, all you need to do now is run 
 
 ```bash
 ./main

board_optimized.h

@@ -36,6 +36,7 @@ template <int size> class BoardOptimized {
     int right_wrap{(j + 1) & mod}, up_wrap{(i - 1) & mod},
         down_wrap{(i + 1) & mod}, left_wrap{(j - 1) & mod};
 
+    // Add to the neighbor count of the neighboring cell (bit 1 - 4)
 #pragma omp atomic update
     cells[down_wrap][right_wrap] += off;
 #pragma omp atomic update