Bump static-eval from 2.0.0 to 2.1.0 in /examples/sf

Bumps [static-eval](https://github.com/browserify/static-eval) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/browserify/static-eval/releases)
- [Changelog](https://github.com/browserify/static-eval/blob/master/CHANGELOG.md)
- [Commits](browserify/static-eval@2.0.0...v2.1.0)

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