How to update my module's dev branch on Drupal.org
No need to deal with tags for the dev branch. Tags are only required for stable releases.

Since you have already added your dev branch you just have to add your files, commit them and push them, like this:


git add path/to/files
git commit -m "Commit message"
git push origin 7.x-1.x


Then you just wait for drupal.org to reroll a new dev version. It takes up to 12 hours to see a new dev version on the project page.

You should be able to see your commits though if you click the View commits link in the development sidebar block.