breaking up distribution tasks; moving version to a template to have a simpler concat function

tasks/pages.rb

@@ -0,0 +1,13 @@
+desc "Build the Github pages HTML"
+task :build_pages => :require_pages_submodule do
+  Dir.chdir("pages") do
+    FileUtils.rm_r('pages_output') if File.exist?('pages_output')
+    Dir.chdir('pages_source') do
+      system("frank export ../pages_output")
+    end
+    puts "\n"
+    puts "Copying built website to the root of the gh-pages branch"
+    puts "\n\n"
+    system("cp -r pages_output/* .")
+  end
+end