Add Github Actions support

.github/workflows/ci.yml

@@ -0,0 +1,32 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  tests:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+      - run: g++ --version
+      - run: cmake --version
+
+      # before install
+      - run: sudo apt-get update -qq
+      - run: sudo apt-get install -y libzmq3-dev libzmq5
+      - run: sudo apt-get install -y libboost-all-dev
+      - run: sudo apt-get install -y libyaml-cpp0.6 libyaml-cpp-dev
+      - run: sudo apt-get install -y libcurl4-gnutls-dev
+
+      # script
+      - run: mkdir build
+      - run: cmake ..
+        working-directory: build
+      - run: make
+        working-directory: build
+      - run: ctest --output-on-failure
+        working-directory: build
+
+      # after success
+      - uses: codecov/codecov-action@v1

README.md

@@ -1,6 +1,6 @@
 # Broker
-[![Build Status](https://travis-ci.org/ReCodEx/broker.svg?branch=master)](https://travis-ci.org/ReCodEx/broker)
-[![Coverage](https://img.shields.io/coveralls/ReCodEx/broker.svg)](https://coveralls.io/github/ReCodEx/broker)
+[![Build Status](https://github.com/ReCodEx/broker/workflows/CI/badge.svg)](https://github.com/ReCodEx/broker/actions)
+[![codecov](https://codecov.io/gh/ReCodEx/broker/branch/master/graph/badge.svg?token=PWV4OZ75DI)](https://codecov.io/gh/ReCodEx/broker)
 [![License](http://img.shields.io/:license-mit-blue.svg)](http://badges.mit-license.org)
 [![Docs](https://img.shields.io/badge/docs-latest-brightgreen.svg)](http://recodex.github.io/broker/)
 [![Wiki](https://img.shields.io/badge/docs-wiki-orange.svg)](https://github.com/ReCodEx/wiki/wiki)