Run `gem push` test without Bundler
Clean up .gitignore
Thin out dependencies required for Travis testing
Silence test warnings from rubygems
Merge pull request #116 from whitepages/test_gem_without_bundler

Fix failing `rake test:integration`, and clean up Travis CI run
Add delete_allowed parameter
Allow gem deletion by default
Rename param to allow_delete to follow pattern
Merge pull request #117 from whitepages/param_allow_delete

Add allow_delete boolean param; works around #115