Remove non US-ASCII characters

Puppet & Passenger fail when it's non US-ASCII as per https://projects.puppetlabs.com/issues/20897.
Merge branch 'patch-1' of https://github.com/kylegordon/puppet-ssmtp into kylegordon-patch-1
Upgrade specs to version 1.x
Update travis configuration
Merge branch 'kylegordon-patch-1'

Closes #3