Move development dependencies into Gemfile
Refactor Request to just provide basic <epp> element creation
Remove EPP::Request.enable_validation! call from tests
Add XMLHelper to help with XML generation
Refactor HelloRequest to Requests::Hello
Relocate XML schemas in test directory
Add XML fixtures
Add tests for EPP::Request
Add tests for EPP::Requests::Hello
Cleanup root include file
Add EPP::Requests::Command tests
Add EPP::Commands::Logout tests
Add EPP::Requests::Extension and tests
Add namespaces_from_request test helper
Update xpath_find to support attributes
Add EPP::Commands::Login
Add EPP::Commands::Poll
Remove replaced Request subclasses
Add EPP::Commands::Check
Add EPP::Commands::Delete