* Moved audit to root directory.
* Moved code of conduct, contributing and licence files.
* Removed travis config and badge.
* Updated repository links in CONTRIBUTING.
* Moved Gitter badge to main readme. Updated links to contributing and licence.
* Updated main readme.
* Moved references to main readme.
* Renamed token-bridge to oracle.
* Update README.md
Co-Authored-By: rzadp <rzadp@student.mini.pw.edu.pl>
