First commit for Boodoo_Books on _ebooks 3.0.0

- Use .env file for secrets/config values
 - Maintain follower/following parity periodically
 TODO:
  - Support banned terms (override #valid_tweet?)
  - Commands via DM (at least "tweet" command from owner should work)
  - Investigate (anti)social behavior more deeply
 THEN:
  - Spooling/wait-for-config state for post-deploy, pre-config
  - Archive/model creation post-deploy
  - Archive/model periodic refresh

sample.env

@@ -0,0 +1,18 @@
+BOT_NAME=
+SOURCE_USERNAME=
+CONSUMER_KEY=
+CONSUMER_SECRET=
+ACCESS_TOKEN=
+ACCESS_TOKEN_SECRET=
+UPDATE_FOLLOWS_INTERVAL=90m
+TWEET_INTERVAL=2m
+TWEET_CHANCE=0.8
+BLACKLIST=tinysubversions, dril
+BANNED_TERMS=voldemort, evgeny morozov, heroku
+SPECIAL_TERMS=
+DEFAULT_DELAY=5..60
+DM_DELAY=0
+MENTION_DELAY=5..60
+TIMELINE_DELAY=10..600
+TIMEOUT_SLEEP=5
+MAX_ERROR_RETRIES=10