Provide minio-exporter binary without compilation

[abhinav-chittora]

It will be great if you can provide pre-compiled binary for latest minio-exporter so that not everyone have to set up Go environment and have to face problem with different go version and setting up. Also, we might need to provide compatibility matrix.

Last released version is 14 days old which does not have latest code compiled.

[dfredell]

I love this idea. I have heard of Travis CI which is free for open source projects. So I went ahead and made a .travis.yml file. @joe-pll will need to stick his api_key, username, and email in there, so the upload to GitHub will work. But it is working for me. https://travis-ci.org/certusoft/minio-exporter It creates a release in GitHub https://github.com/certusoft/minio-exporter/releases for now you can download it from there.