Indexing with ElasticSearch using Elastisch: initial version
Use asciidoc header
Formatting fixes for ElasticSearch recipe

* Sub-sections to 6th level (doesn't render right, but is consistent
  with the rest of the levels in the book)
* Change errant '====' to '----'
* Indentation tweaks
Merge branch 'michaelklishin-elasticsearch-recipe1'