Add teamspeak to readme and update changelog

CHANGELOG.md

@@ -5,6 +5,7 @@
 - [jolokia2](./plugins/inputs/jolokia2/README.md) - Thanks to @dylanmei
 - [nginx_plus](./plugins/inputs/nginx_plus/README.md) - Thanks to @mplonka & @poblahblahblah
 - [smart](./plugins/inputs/smart/README.md) - Thanks to @rickard-von-essen
+- [teamspeak](./plugins/inputs/teamspeak/README.md) - Thanks to @p4ddy1
 - [wavefront](./plugins/outputs/wavefront/README.md) - Thanks to @puckpuck
 
 ### Release Notes
@@ -50,6 +51,7 @@
 - [#3333](https://github.com/influxdata/telegraf/issues/3333): Perform DNS lookup before ping and report result.
 - [#3398](https://github.com/influxdata/telegraf/issues/3398): Add instance name option to varnish plugin.
 - [#3406](https://github.com/influxdata/telegraf/pull/3406):  Add support for SSL settings to ElasticSearch output plugin.
+- [#3315](https://github.com/influxdata/telegraf/pull/3315): Add Teamspeak 3 input plugin.
 
 ### Bugfixes
 

README.md

@@ -196,6 +196,7 @@ configuration options.
 * [snmp](./plugins/inputs/snmp)
 * [snmp_legacy](./plugins/inputs/snmp_legacy)
 * [sql server](./plugins/inputs/sqlserver) (microsoft)
+* [teamspeak](./plugins/inputs/teamspeak)
 * [tomcat](./plugins/inputs/tomcat)
 * [twemproxy](./plugins/inputs/twemproxy)
 * [varnish](./plugins/inputs/varnish)