initial FloatingActionButton

[NoWay1201]

I created a FAB, but it's first version, we still need to work on that.

Hmm. Don't know why, but Button.js got changed too, it should'nt (I submit PR for this Button in #40 ).

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Damian Rachel seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}