Changing `.travis.yml` to allow public upload of binaries

Signed-off-by: Jake Ritorto <j.ritorto@modcloth.com>
Oops, forgot to get rid of `--encrypt` flag

Signed-off-by: Jake Ritorto <j.ritorto@modcloth.com>
Using master instead of versioned copy of TB
Merge pull request #6 from modcloth-labs/update-tb-for-public-upload-artifacts

Update tb for public upload artifacts