init checkin of a ticker attribute for input plugins
updated stat_accum_input tests to use the new input plugin ticker
removed tickChan from stat_accum_input
updated docs to reflect the use of ticker_interval and that it is now
a required configuration parameter
Add ElasticSearchOutput support
revised as per code review

- added TickerInterval attribute to the stat_accum_input  with a default of 10 seconds
- switched the access to Ticker() to use a local instance for mocking purposes
Merge pull request #278 from mozilla-services/features/issue_259

Features/issue 259
Merge pull request #283 from tlrx/features/elasticsearch-output

Add ElasticSearchOutput support to Heka
Skip directly to the stored seek position and then move backwards through the file
to get the stored line for hash comparison. Much faster than iterating through each
line if you're dealing w/ very large log files.
Merge pull request #285 from mozilla-services/features/fast-logfile-seek

More efficient file seeking when checking against the seekjournal.
Add some benchmarks for sandbox output

- Add reasonable defaults for the sandbox constraints
Merge pull request #286 from mozilla-services/benchmark/sandbox-output

Add some benchmarks for sandbox output
Version bump.
Merge branch 'master' into dev

Conflicts:
	cmd/hekad/main.go
Recording changes.
Issue #287 Remove the match capture
Remove paren in the output string
Clean up logline_decoder captures

- Fail MatchRegex configurations with no capture groups
- Remove the Submatch/SubexpNames bounds check
Gofmt and comment clean-up in elasticsearch.go and ElasticSearchOutput docs.
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