Merge pull request #7 from BillsJ/master

Added examples in GUI section and changed minor errors
Merge branch 'master' of https://github.com/BillsJ/cadmus
Merge branch 'master' of https://github.com/BillsJ/cadmus
Updated index.html
Updated styles
Update Part III: Variables.md
Update Addendum I: History of Java.md
Update Addendum I: History of Java.md
Merge branch 'master' of https://github.com/BillsJ/cadmus
merging