Merge pull request #7486 from oberstet/doc-integr-add-txaio-etcd

add txaio-etcd to intergrations.md

Documentation/integrations.md

@@ -44,6 +44,7 @@
 - [russellhaering/txetcd](https://github.com/russellhaering/txetcd) - a Twisted Python library
 - [cholcombe973/autodock](https://github.com/cholcombe973/autodock) - A docker deployment automation tool
 - [lisael/aioetcd](https://github.com/lisael/aioetcd) - (Python 3.4+) Asyncio coroutines client (Supports v2)
+- [txaio-etcd](https://github.com/crossbario/txaio-etcd) - Asynchronous etcd v3-only client library for Twisted (today) and asyncio (future)
 
 **Node libraries**
 
@@ -87,7 +88,7 @@
 **PHP Libraries**
 
 - [linkorb/etcd-php](https://github.com/linkorb/etcd-php)
-- [activecollab/etcd](https://github.com/activecollab/etcd) 
+- [activecollab/etcd](https://github.com/activecollab/etcd)
 
 **Haskell libraries**
 
@@ -132,7 +133,7 @@
 - [binocarlos/yoda](https://github.com/binocarlos/yoda) - etcd + ZeroMQ
 - [blox/blox](https://github.com/blox/blox) - a collection of open source projects for container management and orchestration with AWS ECS
 - [calavera/active-proxy](https://github.com/calavera/active-proxy) - HTTP Proxy configured with etcd
-- [chain/chain](https://github.com/chain/chain) - software designed to operate and connect to highly scalable permissioned blockchain networks 
+- [chain/chain](https://github.com/chain/chain) - software designed to operate and connect to highly scalable permissioned blockchain networks
 - [derekchiang/etcdplus](https://github.com/derekchiang/etcdplus) - A set of distributed synchronization primitives built upon etcd
 - [go-discover](https://github.com/flynn/go-discover) - service discovery in Go
 - [gleicon/goreman](https://github.com/gleicon/goreman/tree/etcd) - Branch of the Go Foreman clone with etcd support