inspector lists instance variables
inspector now lists public methods as well
inspector is a method on object now
Merge branch 'master' of github.com:dpaola2/RubyTalk

* 'master' of github.com:dpaola2/RubyTalk:
  Update README.md
  added observer pattern to roadmap
  workspace improvements
  roadmap: exceptions in other threads
  README contains roadmap now
remove TODO from readme file