initial commit & implemented stylesheet_include_tag & javascript_include_tag
added some comments
css_engine & js_engine should be configurable by the user
support less files
default css_engine is scss, default js_engine is coffee
stylesheet_path & javascript_path are configurable by the user who included Lotus::Assets::AssetsHelpers
move ClassMethods into own Dsl module, include Lotus::Assets instead of Lotus::Assets::AssetsHelpers
use file configured by the user
implement to_file option, implement configuration_clear which resets all instance vars
update gemspec
implemented specs for lotus-assets
included to_file specs
added path_prefix dsl configuration
Remove unneeded configuration dsl & methods

javascript_file & stylesheet_file are obsolete because lotus templates
methods can be called with params.
Also the javascript_engine & stylesheet_engine are obsolete because we
are no longer setting a fixed javascript_engine or stylesheet_engine.

Also renamed javascript_include_tag and stylesheet_include_tag to
javascript and stylesheet.

This means the user can say following:

    <%= stylesheet 'application' %>

And in the current assets path a file with the name application.scss is
picked up automatically.
assets_path is configurable and not always tried to set via Application.configuration, this means this framework could be used in standalone
Created Configuration class & Assets.configure

Moved Lotus Assets configuration from Assets eigenclass to seperate
Configuration class. Also added a configure class method to
Lotus::Assets so the user is able to configure Lotus::Assets.

Lotus::Assets::Dsl is no longer extended into the base class (could be
deleted) but is used in the testsuite for prettier tests.
remove obsolete comment
include Lotus::Assets::Dsl into Lotus::Assets::Helpers for nicer syntax
update readme
added standalone & semi-standalone example