Merge branch '13-coverage' into 'master'

Add coverage to README

Closes #13

See merge request tnir/docs.djangoproject.jp!7

Author: tnir

.gitlab-ci.yml

@@ -9,7 +9,7 @@ format-test:
   script:
   - go fmt
   - go vet
-  - go test
+  - go test -cover
 
 deploy:
   image: google/cloud-sdk:193.0.0

README.md

@@ -1,6 +1,7 @@
 # docs.djangoproject.jp
 
 [![pipeline status](https://gitlab.com/tnir/docs.djangoproject.jp/badges/master/pipeline.svg)](https://gitlab.com/tnir/docs.djangoproject.jp/commits/master)
+[![coverage report](https://gitlab.com/tnir/docs.djangoproject.jp/badges/master/coverage.svg)](https://gitlab.com/tnir/docs.djangoproject.jp/commits/master)
 
 Mirror from: https://gitlab.com/tnir/docs.djangoproject.jp