feat(travis): switch to codecov for code coverage (#1165)

.codecov.yml

@@ -0,0 +1,5 @@
+ignore:
+  - "tests/*"
+
+comment:
+  require_changes: true

.travis.yml

@@ -20,11 +20,10 @@ matrix:
 
     - compiler: gcc
       env: BUILD_TYPE=Debug POLYBAR_BUILD_TYPE=tests BUILD_TESTS=ON
-      before_install:
-        - pip install --user cpp-coveralls
       script: ${TRAVIS_BUILD_DIR}/common/travis/tests.sh
       after_success:
-        - coveralls --root .. -E ".*CMakeFiles.*" -e tests -e lib -e build/googletest-src --gcov-options '\-p'
+        - cd ${TRAVIS_BUILD_DIR}
+        - bash <(curl -s https://codecov.io/bash) -F unittests -a "-ap" -Z || echo "Codecov did not collect coverage reports"
 
     - compiler: gcc
       env: BUILD_TYPE=Release

README.md

@@ -1,7 +1,7 @@
 # Polybar
 
 [![Build Status](https://travis-ci.org/jaagr/polybar.svg?branch=master)](https://travis-ci.org/jaagr/polybar)
-[![Coverage Status](https://coveralls.io/repos/github/jaagr/polybar/badge.svg?branch=master)](https://coveralls.io/github/jaagr/polybar?branch=master)
+[![Coverage Status](https://codecov.io/gh/jaagr/polybar/branch/master/graph/badge.svg)](https://codecov.io/gh/jaagr/polybar/branch/master)
 [![MIT License](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000?style=plastic)](https://github.com/jaagr/polybar/blob/master/LICENSE)
 
 A fast and easy-to-use tool for creating status bars.