Add feature and fix bug

- Change type attribute of showBoundary in Color in Frame
Reportlab  give possibility to have the box with color border.
 reportlab/platypus/frame.py:214

- Fix working RegisterFontFamily 	

- Authorize use new class Canvas 
i add this feature to display the  total number of page with this class https://gist.github.com/KanorUbu/5203608