add README.markdown and CHANGES.markdown to extra-doc-files
#34
| Job | Run time |
|---|---|
| 2m 50s | |
| 9m 13s | |
| 2m 36s | |
| 2m 25s | |
| 2m 10s | |
| 2m 9s | |
| 2m 12s | |
| 2m 14s | |
| 2m 20s | |
| 2m 28s | |
| 30m 37s |