Added ability to load configuration file contents from the config obj…

…ect (so you don't have to be aware that Halcyon::Config::File even exists).

lib/halcyon/config.rb

@@ -175,6 +175,14 @@ def defaults(env = nil)
       Halcyon::Config.defaults(env)
     end
 
+    # Loads the contents of a configuration file found at <tt>path</tt> and
+    # merges it with the current configuration.
+    # 
+    def load_from(path)
+      self.configure(Halcyon::Config::File.load(path))
+      self
+    end
+
     def inspect
       attrs = ""
       self.config.keys.each {|key| attrs << " #{key}=#{self.config[key].inspect}"}
@@ -231,6 +239,12 @@ def defaults(env = nil)
         end
       end
 
+      # Loads the contents of a configuration file found at <tt>path</tt>.
+      # 
+      def load_from(path)
+        Halcyon::Config::File.load(path)
+      end
+
     end
 
   end