Required files
rubygems
bundler
rspec
gherkin
stringio
gherkin/sexp_recorder
gherkin/output_stream_string_io
gherkin/java_libs
gherkin/shared/bom_group
gherkin/shared/lexer_group
gherkin/shared/tags_group
gherkin/shared/doc_string_group
gherkin/shared/row_group