adds functionality and testing for command design pattern
updates gemspec
updates readme
refactors designpatterns to patterns
fixes calling to superclass execute and undo functions
adds rdoc comments
full rdocs for all classes/examples and logic fix in delete file class
adds gang of four definition to documentation
adds headings to a few files and adds text to an exception
adds a line to readme
adds username to readme
adds observer pattern and tests
adds attribute documentation
fixes rdoc examples
fixes variable and completes rspec for observer
adds rake task
adds a test runner for rspec tests
fixes run_tests.rb output
changes readme to point to site
small change