Define default map as suggested on #460

Base path now sets a default map without having to use an external config.ru.

README.md

@@ -413,7 +413,7 @@ By default, internal wiki links are all absolute from the root. To specify a dif
     wiki = Gollum::Wiki.new("my-gollum-repo.git", :base_path => "/wiki")
-Note that base_path just modifies the links. To map gollum to a non-root location, use `map` in config.ru. See [#532](https://github.com/github/gollum/issues/532).
+Note that base_path just modifies the links. To map gollum to a non-root location, use `map` in config.ru. See [#532](https://github.com/github/gollum/issues/532). `bin/gollum` now includes a simple map based on base path.
 > :base_path     - String base path for all Wiki links.
 >

bin/gollum

@@ -141,5 +141,31 @@ else
     require cfg
   end
-  Precious::App.run!(options)
+  base_path = wiki_options[:base_path]
+
+  if wiki_options[:base_path].nil?
+    Precious::App.run!(options)
+  else
+    require 'rack'
+
+    class MapGollum
+      def initialize base_path
+        @mg = Rack::Builder.new do
+          map '/' do
+            run Proc.new { [ 302, {'Location'=> "/#{base_path}" }, [] ] }
+          end
+
+          map "/#{base_path}" do
+            run Precious::App
+          end
+        end
+      end
+
+      def call(env)
+        @mg.call(env)
+      end
+    end
+    # Rack::Handler does not work with Ctrl + C. Use Rack::Server instead.
+    Rack::Server.new(:app => MapGollum.new(base_path), :Port => options['port']).start
+  end
 end