adding option to specify date range in config file

app_conf.yaml.example

@@ -6,9 +6,11 @@ applicationSettings:
 
 # Details for querying google analytics API
 # don't forget to add it to your analytics users, profileId - add your google analytics profile ID
+# startDaysAgo - specify start date, it can be 7, 20, 30 days ago, this value should be integer
 googleAnalyticsApi:
     serviceAccount: '__your_service_account@developer.gserviceaccount.com'
     profileId: '__your_profile__id'
+    startDaysAgo: 7
 
 # application credentials from APIs & auth > credentials > Client ID for native application
 # key represents "Client ID", secret is "Client secret". Oauth module expects to find "google_oauth" in app settings

run.py

@@ -40,6 +40,7 @@ def __init__(self):
             try:
                 settings["service_account_email"] = document["googleAnalyticsApi"]["serviceAccount"]
                 settings["ga_profile_id"] = document["googleAnalyticsApi"]["profileId"]
+                settings["start_days_ago"] = int(document["googleAnalyticsApi"]["startDaysAgo"])
             except Exception as ex:
                 print("Check your google service account details: %s" % ex)
                 sys.exit(1)