Attempt to add Codecov support for automated source code quality checks (https://codecov.io/gh/GRASS-GIS/grass-ci)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@73764 15284696-431f-4ddb-bdfa-cd5b030d7da7

.travis.yml

@@ -27,6 +27,9 @@ install:
 script:
   - ./.travis/$TRAVIS_OS_NAME.script.sh
 
+after_success:
+  - bash < (curl -s https://codecov.io/bash)
+
 notifications:
         email:
             recipients: