Merge branch 'master' of github.com:github/pages-gem

* 'master' of github.com:github/pages-gem:
  Update cibuild for new subcommands.
  Create two subcommands: 'versions', 'br'.
  Print directly in executable. h/t @ixti
  Test the executable
  Add executable.
  Output the dependency versions for this build of Pages.

bin/github-pages

@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+
+command = ARGV[0].to_s.downcase
+
+case command
+when "versions"
+  require File.expand_path("../../lib/github-pages", __FILE__)
+  GitHubPages.gems.each { |g,v| puts "gem '#{g}', '#{v}'" }
+when "br"
+  puts [
+    "gem 'github-pages'",
+    ":branch => '#{ARGV[1]}'",
+    ":git => 'git://github.com/github/pages-gem'"
+  ].join(", ")
+else
+  abort "error: '#{command}' is an unrecognized command. options are: 'versions', 'br'."
+end

github-pages.gemspec

@@ -11,6 +11,7 @@ Gem::Specification.new do |s|
   s.email                 = "support@github.com"
   s.homepage              = "https://github.com/github/pages-gem"
   s.license               = "MIT"
+  s.executables           = ["github-pages"]
   s.files                 = ["lib/github-pages.rb"]
 
   GitHubPages.gems.each do |gem, version|

script/cibuild

@@ -1,7 +1,9 @@
 #!/bin/sh
 # Test that all dependencies resolve
 
-set -e
+set -ex
 
+bundle exec bin/github-pages versions
+bundle exec bin/github-pages br my-branch
 bundle exec jekyll --version
 bundle exec rspec