Merge pull request #4 from Norberg/master

Fixed some example scripts.
Fixed error on adding and removing from container.

- Added two new tests for tracking this error.
Improved FoldingSection folding operation design.
Merge pull request #8 from Norberg/travis

Added travis continuous integration config.
Simplified slider layout code.
Fixed drawing order of slider graphics.
Improved graphical appearance of Button.
Fixed theme of Button.
Improved appearance of Button and Checkbox.
Improved text in api and theme docs.
Added doc section on Parser, part of the Theme API.
Added reference to decorator pattern on Wrapper.
Improved text of Manager docs.
Simplified README text.
Improved text of api docs.
Fixed #6 by changing a division to integer division, as it should.
Ignore build directory. Set documents to recompute size when text is changed to refresh scrollbars
Merge pull request #9 from tredfern/master

Set document to recompute size when text is changed.
Make unittest return exit code 1 on failure

This is to allow travis to catch test failures