Step 01
  Assign the grid manager component to any gameobject and specify the values such as rows, columns and cell size
  
Step 02
  Create several obstacle objects and tagged as "Obstacles"
  
Step 03
  Create start and end node and tagged respectively as "Start" and "End"
  
Step 04
  Write the test code and call AStar.FindPath static method with respective parameters (Start and Goal)
  
Step 05
  Hit Play and move around the Start and End object in the editor to see the dynamic path calculation