Changed Main.hs to lambda-learner.hs
Added an Open menu item
Merge branch 'master' of github.com:csasarak/lambda-learner

 necessary,
Merge branch 'master' of github.com:csasarak/lambda-learner
Merge branch 'master' of github.com:csasarak/lambda-learner
Added a quit button with a decent layout
Added an empty network description and notes to build with it