Merge pull request #4 from AyushiPanth/master

Added docstrings

Author: wesdoyle

constants.py

@@ -34,13 +34,18 @@ class Disease:
 
 
 class Screen:
+"""
+Constants for Screen
+"""
     WIDTH = 680
     HEIGHT = 480
     FONT_SIZE = 18
     GRAPH_X_UNIT = 0.8
     MEDICAL_LIMIT = 50
 
-
+"""
+Class for initial condition of Patient
+"""
 class InitialCondition:
     POP_UNEXPOSED = 49
     POP_INFECTED = 1