add documentation

aman/app.py

@@ -23,6 +23,7 @@ class RunwaySequencingEncoder(JSONEncoder):
     def default(self, o):
         return { 'runway' : o.Runway.Name, 'spacing' : o.Spacing }
 
+# initialize the environment variables
 if 'AMAN_PATH' not in os.environ:
     os.environ['AMAN_PATH'] = 'C:\\Repositories\VATSIM\\AMAN\\aman-sys\\aman'
 if 'AMAN_CONFIG_PATH' not in os.environ: