Simplify require a bit
Make .gitignore path stricter
Change jsdoc target folder to artifacts/jsdoc
Improve build system

- Add code coverage with istanbul
- Publish code coverage to coveralls
- Publish build artifacts to s3
Fix travis-slack notification
Fix travis s3 deployment secret_access_key
Update s3 access keys

- Use encrypted access_key_id
- Use new aws keys
Update README
0.1.4