Default commit message when adding a README

Summary

When adding a README from GitLab, the default commit message is: 'Add new file'. I would expect 'Add README'

Steps to reproduce

• Create a new project
• Click on the README link
• The commit message is 'Add new file'

Expected behavior

I would expect to see 'Add README'.

When adding a LICENSE, the message is 'Add license' and when adding a .gitignore the message is 'Add .gitignore'. We should be consistent.