Updated Implementation Framework

Updated to cover changes made by Dan to Master regarding general design changes

Also added remove_two_worst survivor selection method

src/termination_point/termination_methods.py

@@ -0,0 +1,16 @@
+class Termination_Methods:
+    """Example functions that can be used to terminate the the algorithms loop"""
+
+    def fitness_based(self, ga):
+        """Fitness based approach to terminate when the goal fitness has been reached"""
+        status = True
+        if(ga.current_fitness > ga.fitness_goal):
+            status = False
+        return status
+
+    def generation_based(self, ga):
+        """Generation based approach to terminate when the goal generation has been reached"""
+        status = True
+        if(ga.current_generation > ga.generation_goal):
+            status = False
+        return status