Mod: auto slide && Add:  slide timer
Mod: slide timer style
Mod: Number Widget style
MOD: Widget Donut

ADD: change percentage like Widget Number
Mod: rewrite fitText && Number Widget style

rewrite fitText as a Directive
ADD: 'minThreshold', 'maxThreshold' for Spline
DEL: delete console.log
Merge pull request #43 from slycloud/master

Mode: auto slide && Widget Spline, Number, Donut