UIView category to have shorter lines to add constraints.
Usage:
#import "UIView+ConstraintsHelper.h"
[self.view setVFLWithOptions:0 metrics:metrics views:views inBlock:^(VFLManager *vflManager) {
[vflManager add:@"H:|-[batView]-|"];
[vflManager add:@"V:|-[batView]-|"];
}];
Swift version in gist form at:
https://gist.github.com/richy486/b95786706276fd58c4dfe811401090a7