Merge branch 'test'
Small debug
Update README.md
Update README.md
Set least image size
Merge branch 'master' of github.com:gecko655/fujimiyaBot
Update README.md
Update some queries.
Adapted to GAE's 10 mins limit. 

Fujimiya-san will remove every "5/friendsCount mins" on Monday. So,
Removing all of friends will take 5 mins.
If there is a KEISHOU (e.g. くん, さん or 君 etc.) in the user's name, it
will not add くん.
Small bug fixes.

Time will be measured from launching of the cron, not from considering
each replies.
Adaptation of twitter's late limit
Reply function will not fetch the reply's information once out-of-date
reply is discovered
Fetch the relation between user and Fujimiya-san as few as possible.
Added log output about which page the image contains.
Updated logger. logger now includes tweeted date of outdated tweet.
Added retrying function if the image url responses 404 (other than 200).

Some big refactoring