Merge pull request #40 from github/version

Expose GitHubPages::VERSION and GitHubPages.versions

.gitignore

@@ -1,2 +1,3 @@
 *.gem
 *.lock
+.bundle

github-pages.gemspec

@@ -1,25 +1,19 @@
+require './lib/github-pages.rb'
+
 Gem::Specification.new do |s|
   s.required_ruby_version = ">= 1.9.3"
 
   s.name                  = "github-pages"
-  s.version               = "13"
+  s.version               = GitHubPages::VERSION
   s.summary               = "Track GitHub Pages dependencies."
   s.description           = "Bootstrap the GitHub Pages Jekyll environment locally."
   s.authors               = "GitHub, Inc."
   s.email                 = "support@github.com"
   s.homepage              = "https://github.com/github/pages-gem"
   s.license               = "MIT"
+  s.files                 = ["lib/github-pages.rb"]
 
-  # Jekyll and related dependency versions as used by GitHub Pages.
-  # For more information see:
-  # https://help.github.com/articles/using-jekyll-with-pages
-
-  s.add_dependency("RedCloth",   "= 4.2.9")
-  s.add_dependency("jekyll",     "= 1.4.2")
-  s.add_dependency("kramdown",   "= 1.2.0")
-  s.add_dependency("liquid",     "= 2.5.5")
-  s.add_dependency("maruku",     "= 0.7.0")
-  s.add_dependency("rdiscount",  "= 2.1.7")
-  s.add_dependency("redcarpet",  "= 2.3.0")
-
+  GitHubPages.gems.each do |gem, version|
+    s.add_dependency(gem, "= #{version}") unless gem == "github-pages"
+  end
 end

lib/github-pages.rb

@@ -0,0 +1,19 @@
+class GitHubPages
+  VERSION = 13
+
+  # Jekyll and related dependency versions as used by GitHub Pages.
+  # For more information see:
+  # https://help.github.com/articles/using-jekyll-with-pages
+  def self.gems
+    {
+      "github-pages" => VERSION.to_s,
+      "jekyll"       => "1.4.2",
+      "kramdown"     => "1.2.0",
+      "liquid"       => "2.5.5",
+      "maruku"       => "0.7.0",
+      "rdiscount"    => "2.1.7",
+      "redcarpet"    => "2.3.0",
+      "RedCloth"     => "4.2.9"
+    }
+  end
+end