Initial work.
Use storyboard
Add show and hide function
Switch off by default
Code formatting
Simplify circle code
Init some variables, needed by gradient
Code formatting
Add comments
Use PI macros
Add Segment control to turn on or turn off gradient color
Some refactor to fix some hacks
Use line cap butt by default
Remove dead code
Replace horrible purple
Remove dev hacks
Use custom function
Change draw order
Remove white outline from inner circle
Removed Storyboard
Merge pull request #7 from dogo/feature/show-hide

Feature/show hide