Improve Templates name and readme

Signed-off-by: Bensuperpc <bensuperpc@gmail.com>

README.md

@@ -1,6 +1,6 @@
 # astar
 
-Fast and easy to use header only 2D astar algorithm library in C++20.
+Fast and easy to use standalone header only 2D astar algorithm library in C++20.
 
 I made it for learning how the astar algorithm works, try to make the fastest, tested and configurable as possible for my needs (future games and works).
 
@@ -24,6 +24,20 @@ It is an [astar algorithm](https://en.wikipedia.org/wiki/A*_search_algorithm), t
 * [x] Debug mode in template argument and lambda function
 * [x] Support direct access and not access to the map
 * [x] Unit tests and benchmarks
+* [ ] Working CI (WIP)
+
+### Heuristic function
+
+You can set the heuristic function to calculate the distance between two points and return the cost.
+
+| Heuristic | C++ Function | Description |
+|-----------|--------------|-------------|
+| euclidean | AStar::Heuristic::euclidean | Default |
+| manhattan | AStar::Heuristic::manhattan |  |
+| octagonal | AStar::Heuristic::octagonal |  |
+| chebyshev | AStar::Heuristic::chebyshev |  |
+| euclideanNoSQR | AStar::Heuristic::euclideanNoSQR |  |
+| dijkstra | AStar::Heuristic::dijkstra | Always return 0 |
 
 # How to use it