A custom animated circle percent view

1. Add KNCirclePercentView using storyboard/nib/code
2. Call Methods:

/**
 * Draw Circle with specified radius
 *
 * @param radius radius of circle view
 * @param percent percent of circle to display
 * @param lineWidth circle thickness
 * @param clockwise determine clockwise
 * @param fillColor color inside circle
 * @param strokeColor color of circle line
 * @param animatedColors colors array to animated. if this param is nil, Stroke color will be used to draw circle
 */

- (void)drawCircleWithRadius:(CGFloat)radius
                     percent:(CGFloat)percent
                    duration:(CGFloat)duration
                   lineWidth:(CGFloat)lineWidth
                   clockwise:(BOOL)clockwise
                   fillColor:(UIColor *)fillColor
                 strokeColor:(UIColor *)strokeColor
              animatedColors:(NSArray *)colors;
                                          
  - (void)startAnimation;

##License The MIT License (MIT)

Copyright (c) 2015 Khoi Nguyen

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.