have scalars accept single element sequences
add gemfile to matrix
generate textual specification, fixes #12
proper links in spec [ci skip]
description for Version and VersionList
enable docs for open mapping [ci skip]
document alternative notification formats
fix(nodes): allow `compiler' in matrix matchers
docs(spec): update SPEC.md file
generate better specs for lists of fixed values [ci skip]
fix alias [ci skip]
Merge pull request #13 from travis-ci/hh-exclude-compiler

fix(nodes): allow `compiler' in matrix matchers
regenerate spec [ci skip]
add Rakefile [ci skip]
add ga [ci skip]
support both webhooks and wehbook
add composer_args, fixes #11
add npm_args, fixes #9
add source_key, fixes #6
regenerate spec