New properties

added extra properties to control customisation of font & colour of
digits
Digit Drawing

drawing the digits on the clock’s face
modified the example
Fixes border/gradution colour not updating
more than 60 minutes when panning right/left

now the user can pan right or left to change the active time without
being limited to 60minutes.
Merge pull request #5 from mythodeia/master

Digit drawing & customization