Auto layout macros, for shortening auto layout code.

TJLAutoLayoutMacros.h

#define NSConstraintMake(item, itemAttribute, relation, otherItem, otherAttribute, multiplier, constant) \
 [NSLayoutConstraint constraintWithItem:item attribute:itemAttribute relatedBy:relatation toItem:otherItem attribute:otherAttribute multiplier:multiplier constant:constant] \

#define kLeading NSLayoutAttributeLeading
#define kTrailing NSLayoutAttributeTrailing
#define kTop NSLayoutAttributeTop
#define kBottom NSLayoutAttributeBottom
#define kCenterX NSLayoutAttributeCenterX
#define kCenterY NSLayoutAttributeCenterY
#define kLeft NSLayoutAttributeLeft
#define kRight NSLayoutAttributeRight
#define kBaseline NSLayoutAttributeBaseline
#define kWidth NSLayoutAttributeWidth
#define kHeight NSLayoutAttributeHeight
#define kNot NSLayoutAttributeNotAnAttribute
#define kEqual NSLayoutRelationEqual
#define kGreaterThanOrEqual NSLayoutRelationGreaterThanOrEqual
#define kLessThanOrEqual NSLayoutRelationLessThanOrEqual