added support for creating mappings
Merge pull request #21 from inaka/mapping

Added support for creating mappings
Add _stats call.
Merge branch 'master' of github.com:tsloughter/erlastic_search

Conflicts:
	src/erlastic_search.erl
Remove empty spec attribute from doc, crashes edoc.
Delete index
Merge pull request #22 from anha0825/master

Add _stats call
Update Hackney to 0.13.1
Merge pull request #24 from arjan/master

Update Hackney to 0.13.1