Update models.py

Author: anenadic

inflammation/models.py

@@ -1,6 +1,10 @@
 """Module containing models representing patients and their data.
 
 The Model layer is responsible for the 'business logic' part of the software.
+
+Patients' data is held in an inflammation table (2D array) where each row contains 
+inflammation data for a single patient taken over a number of days 
+and each column represents a single day across all patients.
 """
 
 import numpy as np