Create Population class

src/population.py

@@ -0,0 +1,16 @@
+from individual import Individual
+
+
+class Population(object):
+
+    def __init__(self, size):
+        self.members = []
+        for current in range(0, size):
+            self.members.append(Individual())
+
+    def fitness_function(self):
+        total = 0
+        for member in self.members:
+            total += member.fitness_function()
+        return total
+