README: update list of approvers (open-telemetry#388)

mauriciovasquezbernal · web-flow · commit 6aa69ae4bc07 · 2020-01-29T13:32:23.000-08:00
diff --git a/README.md b/README.md
@@ -117,9 +117,12 @@ Meeting notes are available as a public [Google doc](https://docs.google.com/doc
 
 Approvers ([@open-telemetry/python-approvers](https://github.com/orgs/open-telemetry/teams/python-approvers)):
 
+- [Alex Boten](https://github.com/codeboten), LightStep
 - [Carlos Alberto Cortez](https://github.com/carlosalberto), LightStep
 - [Christian Neumüller](https://github.com/Oberon00), Dynatrace
+- [Hector Hernandez](https://github.com/hectorhdzg), Microsoft
 - [Leighton Chen](https://github.com/lzchen), Microsoft
+- [Mauricio Vásquez](https://github.com/mauriciovasquezbernal), Kinvolk
 - [Reiley Yang](https://github.com/reyang), Microsoft
 
 *Find more about the approver role in [community repository](https://github.com/open-telemetry/community/blob/master/community-membership.md#approver).*
