Add travis to the team

[fabiomontefuscolo]

Hello

This is a travis config to build RPM whenever someone pushes on master. It uses a docker image based on CentOS with rpm build tools. Actually, the image was test over app-syncthing and syncthing repositories forked from Wikisuite.

But to activate it, you need to create a Travis account, activate this project and run the travis tool to generate an api_key for Wikisuite account. Also, you will need to update the repo on yml.

• https://hub.docker.com/r/montefuscolo/centos-rpmbuild/
• https://github.com/fabiomontefuscolo/docker-centos-rpmbuild

[fabiomontefuscolo]

Please,

Take a look on WikiSuite/syncthing#2. It is the same process for travis.

Thanks!