Updated to use 0.13.x version of Elixir
Fixed failing acceptance tests with count query
Fixed a bunch of another acceptance tests
Fixed update by query acceptance test
Fixed percolator tests
Fixed acceptance test with warmers
decode json with keys as atoms and fix some acceptances this way
make more tests pass
Fixed acceptance tests to use atoms as keys for json-like parsed body
make rest of the tests pass
Bumped elixirs version on travis to the latest stable
Uncommented update test
Merge remote-tracking branch 'origin/rc' into tidy_up

Conflicts:
	.travis.yml
Merge pull request #124 from roundscope/tidy_up

Tidy up