Update installation instructions for debian
Merge pull request #535 from rethinkdb/atnnn/debian

Update installation instructions for debian
Move debian to the list of official packages
Merge pull request #538 from rethinkdb/atnnn/debian

Move debian to the list of official packages
Copy edits for typos
Merge pull request #539 from epc/epc-2014280

Copy edits for typos
Add batch_conf info to ruby and python; closes #248
Merge branch 'issue-248-fix'
Elasticsearch article