I am trying to make a robot that can go back to its home base by using IR Beacon Much like this one.
but i really have hard time searching a good Library that supports multiple IR receiver modules (4-8 IR receiver)
hence. what I'm trying to do is to
use multiple IR detectors to pick up the pulses and figure out the direction from which detector is lit up the highest.
Help please. Thanks in advance. 
The receivers have simple ON/OFF outputs. Connect each to an input pin. Scan the input pins to see if any are ON. The one that is ON is pointing toward a beacon. If two adjacent receivers are ON the beacon is somewhere between the two.
You can use two receivers on the front of your robot to fine-tune the heading. Put a baffle between them and only when pointed directly at the beacon will both see the signal.