Merge pull request #77 from uber/remove-appveyor

Change test badge to GH Actions, remove Appveyor

Author: isaacbrodsky

.appveyor.yml

@@ -2,14 +2,13 @@
 
 # H3-Java
 
-[![Build Status](https://travis-ci.com/uber/h3-java.svg?branch=master)](https://travis-ci.com/uber/h3-java)
-[![Build status](https://ci.appveyor.com/api/projects/status/pjp4m666p9c24jyd/branch/master?svg=true)](https://ci.appveyor.com/project/Uber/h3-java/branch/master)
+[![tests](https://github.com/uber/h3/workflows/tests/badge.svg)](https://github.com/uber/h3/actions)
 [![Coverage Status](https://coveralls.io/repos/github/uber/h3-java/badge.svg?branch=master)](https://coveralls.io/github/uber/h3-java?branch=master)
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](LICENSE)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.uber/h3/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.uber/h3)
 [![H3 Version](https://img.shields.io/badge/h3-v3.7.0-blue.svg)](https://github.com/uber/h3/releases/tag/v3.7.0)
 
-This library provides Java bindings for the [H3 Core Library](https://github.com/uber/h3). For API reference, please see the [H3 Documentation](https://uber.github.io/h3/).
+This library provides Java bindings for the [H3 Core Library](https://github.com/uber/h3). For API reference, please see the [H3 Documentation](https://h3geo.org/).
 
 # Usage