FASTTTcamera 介绍
FASTTTcamera 是 一个快速和易用的 iOS 相机框架，带可定制的滤镜。
示例代码：
#import "ExampleViewController.h"
#import <FastttCamera.h>
@interface ExampleViewController () <FastttCameraDelegate>
@property (nonatomic, strong) FastttCamera *fastCamera;
@end
@implementation ExampleViewController
- (void)viewDidLoad
{
[super viewDidLoad];
_fastCamera = [FastttCamera new];
self.fastCamera.delegate = self;
[self fastttAddChildViewController:self.fastCamera];
self.fastCamera.view.frame = self.view.frame;
}