add "ttl" to ES.index()
ttl: add to non-bulk index()
Added support for multi search
MultiSearch: add newline at the end of body

Apparently, ES doesn't accept other requests
ResultSet: fix indices in __getitem__
MultiSearch: tests added
Merge pull request #305 from CGenie/cgenie

Added support for multi search
add suport for warmers
Merge pull request #306 from Fiedzia/warmers

add suport for warmers
Merge pull request #301 from unthingable/master

add "ttl" to ES.index()