Merge pull request #8 from Vertice/master

this should fix id$ generation,
Merge pull request #10 from Vertice/master

ignore error state when removing items
test that should pass but does not: updating entities
Merge pull request #11 from nherment/updating_entities_should_not_create_a_new_entry_in_es

test that should pass but does not: updating entities
set id$ again