Add 'digest_timeline' option to twitterlogger.

If true (default), use current behaviour (ie digest of all tweets since
last run). If false, creates a new DayOne entry per tweet.
Update README.md

Deleted typo and added Apple developer download link for command line tools.
Merge pull request #243 from larryhynes/patch-3

Update README.md
Merge pull request #223 from randomphrase/twitter-nodigest

Add 'digest_timeline' option to twitterlogger.
Get goodreads working again by using the new feed format
Merge pull request #249 from BrettBukowski/goodreads-fix

Get goodreads working again by using the new feed format
Merge commit '62be6ed0d96aed8cffb6c7e869fe8924d06510d4'

* commit '62be6ed0d96aed8cffb6c7e869fe8924d06510d4':
  Get goodreads working again by using the new feed format
  Update README.md
  Add 'digest_timeline' option to twitterlogger.