Fixed typo in README
Use Date.now when possible
Merge pull request #56 from vmx/readme-typo-fix

Fixed typo in README
Use native isFinite method to detect NaN and Infinities
Merge pull request #59 from subzey/feature/date-now

Use Date.now when possible
Merge pull request #68 from subzey/feature/is-finite

Use native isFinite method to detect NaN and Infinities
Added statement regarding DEV branch into README