ref #80 add test

Small fixes in the README.md (#77)

* Fix a typo in the README.md
* Use https instead of http in the README.md

update Cargo.lock

Update Cargo.toml

fix #66 handle none exisiting paths in Doc on index and query (#67)

* fix #66 handle none exisiting paths in Doc on index and query
* return JSON result on query
* Async index thread

fix #55 return the right type on json.num* call (#56)

* fix #55 return the right type on json.num* call

fmt code

Update README.md

update version to 0.3.0

Merge pull request #27 from RedisLabsModules/del_replace

Del replace