Usage questions

[yevyevyev]

Thank you @hurshi for the awesome package! I got a few questions, maybe you can add the answers in the future to README?

• how to invalidate manually the cache? should I set max-age to 0? (when user makes pull to refresh for example)
• how to delete ALL items from cache (when the user logs in with another account)

[hurshi]

Thanks for your report, I have updated README, and add some example.
And this is my suggestion for your question:

• _manager.delete(url);
• _manager.clearAll();