Summary: Make the release script that's been floating around in my gists
for a while into a real script.
Test Plan:
- Comment out all the scary bits (the two pushes, and `npm
publish`), and run:
- `./release.sh 0.6.0`
- Checkout the `v0.6.0` tag, see that it successfully modified
package.json and bower.json to version 0.6.0, and built and committed
the rest of the files.
- `git tag -d v0.6.0`
- `./release.sh 0.6.0 0.7.0`
- Checkout master, see that it successfully made a commit bumping
package.json and bower.json to 0.7.0-pre.
Reviewers: @kevinbarabash
