Merge pull request #56 from fehmicansaglam/master

Update docs for the mapping DSL
handle the specific date histogram facet of ES
add the json test file
Merge pull request #57 from docteurZ/datehistogram

Date Histogram Facet
Update README.md
Merge pull request #58 from hura/patch-4

Update README.md
Update createindex.md
Merge pull request #59 from hura/patch-5

Update createindex.md
Update delete.md
Update delete.md
Added delete index DSL
Update README.md
Update delete.md
Updated scoverage plugin to latest version
Merge pull request #60 from hura/patch-5

Update delete.md
Fix: varargs only work with parentheses
Merge pull request #61 from hura/patch-6

Fix: varargs only work with parentheses
Add support for index status request
Document index status query
Added support for adding/removing aliases