Improve code

See PR #10

Update dependencies

See PR #9

fix buffer-alloc

See PR #8

Use Buffer.byteLength

Use Buffer.byteLength over String.prototype.length.

Use crypto module if possible

The new release will use the method crypto.timingSafeEqual if available. Older versions still fallback to this package's safe compare method.

update dependencies

• update dev dependencies
• add tools coveralls and codeclimate to travis build

initial release

1.0.0