Modified the code so that settingslogic doesn't raise an exception wh…

…en environment specific settings aren't defined. Environment specific settings now also work when initializing Settings with a Hash.

Signed-off-by: Ben Johnson <bjohnson@binarylogic.com>

lib/settingslogic/settings.rb

@@ -40,10 +40,13 @@ def initialize(name_or_hash = Config.settings_file)
         root_path = defined?(RAILS_ROOT) ? "#{RAILS_ROOT}/config/" : ""
         file_path = name_or_hash.is_a?(Symbol) ? "#{root_path}#{name_or_hash}.yml" : name_or_hash
         self.update YAML.load(ERB.new(File.read(file_path)).result).to_hash
-        self.update self[RAILS_ENV] if defined?(RAILS_ENV)
       else
         raise ArgumentError.new("Your settings must be a hash, a symbol representing the name of the .yml file in your config directory, or a string representing the abosolute path to your settings file.")
       end
+      if defined?(RAILS_ENV)
+        rails_env = self.keys.include?(RAILS_ENV) ? RAILS_ENV : RAILS_ENV.to_sym
+        self.update self[rails_env] if self[rails_env]
+      end
       define_settings!
     end