fix #5
fix setCurrentValue
fix angleFromValue and force redraw
Fixed label alignment issues
Merge pull request #6 from ciotto/fix_set_current_value

Fix setCurrentValue
Merge branch 'fix_snap_to_label' of github.com:ciotto/EFCircularSlider into ciotto-fix_snap_to_label
Merge branch 'issue/label-alignment' of github.com:tomredman/EFCircularSlider into tomredman-issue/label-alignment
notifying clients that value has changed when setCurrentValue called, fixes #8
showing off setCurrentValue in basic example
removing the message that you cannot set the current value programmatically because you can now