Revert "Add support for ci_access_token and :travis_pro"

This reverts commit 9db2be444e4989e29dc3536b4b8d171cb7ad82f7.
Handle file not found error
Merge pull request #22 from venmo/marklarr/revert_travis_pro_support

Remove broken travis pro support
Use File.exists? instead of handling exception
Merge pull request #23 from xing/fix_file_not_found

Handle file not found error
v1.2.1