Changes job_control to be a top level attribute.  Fixes status issues with upstart and init.d

The job_control attribute is now a top level one and applies to all instances of
redis and sentinel that are running.

When using upstart, the status command now relies on the default status method
(which uses /sbin/status)

When using init.d, I have added a status command to the init script and the init.d
based service now uses that instead of trying to use pgrep.

Minor cleanup to the README file and additions to the changelog.

Bumps redis default version to 2.8.2
Merge branch '2.0.0_wip' of github.com:brianbianco/redisio into 2.0.0_wip
changelog tweaks
Adds installation of build-essentials to the vagrantfile
Updates default version of redis to 2.8.5
Fix bug with nil file & directory resource for logfile.

This bug was introduced because Chef now checks that file and directory
resource names are not nil.
Updates the changelog
Add stop-writes-on-bgsave-error config option
Updates the changelog and readme
Changes default log level from verbose to notice
Removes annoying trailing whitespace.
Adds configuration options for ziplists, max intset, zset max ziplist
Reorganizes the changelog to account for the fact that version was bumped to 2.1.x
Adds a slew of new configuration options.  Bumps default verison to 2.8.6

Adds options for the following
  lua-time-limit
  slowlog-logs-slower-than
  slowlog-max-len
  notify-keyspace-events
  client-output-buffer-limit
  hz
  aof-rewrite-incremental-fsync
Merge remote-tracking branch 'upstream/2.0.0_wip' into 2.0.0_wip-follow-upstream

Conflicts:
	providers/configure.rb

https://github.com/groovenauts/redisio/pull/2 での
`:daemonized` の追加と、upstream でのインデント修正が衝突していました。
upstream 側での修正をベースに、:daemonized を再度追加しました。