Updated thanks example
Merge pull request #3 from rafaelcor/master

Updated thanks example
corrections suggested by Jean THIERY
news for v63
Merge branch 'master' of github.com:walterbender/Pippy
Add font size +/-
Hide close button if only one tab is present
Add copyright notice
A bit of pep8
Merge branch 'master' of https://github.com/walterbender/Pippy