You can use the npm node.js library to bump semantic versions of your application.
NPM version automatically creates a commit with your updated package.json and creates a tag for locally as well.
To bump the patch version number and then push single tag that was created (assuming you are bumping from 0.0.1 to 0.0.2):
npm version patch
git push origin v0.0.1
If you are working in a feature branch, the above will push the v0.0.1 tag to your remote feature branch.