Added an actual implementation for mas_ relation methods

@@ -192,11 +192,16 @@
 @interface MASConstraint (AutoboxingSupport)
 
 /**
- *  Dummy methods to aid autocompletion
+ *  Aliases to corresponding relation methods (for shorthand macros)
+ *  Also needed to aid autocompletion
  */
 - (MASConstraint * (^)(id attr))mas_equalTo;
 - (MASConstraint * (^)(id attr))mas_greaterThanOrEqualTo;
 - (MASConstraint * (^)(id attr))mas_lessThanOrEqualTo;
+
+/**
+ *  A dummy method to aid autocompletion
+ */
 - (MASConstraint * (^)(id offset))mas_offset;
 
 @end
\ No newline at end of file

@@ -30,18 +30,36 @@
     };
 }
 
+- (MASConstraint * (^)(id))mas_equalTo {
+    return ^id(id attribute) {
+        return self.equalToWithRelation(attribute, NSLayoutRelationEqual);
+    };
+}
+
 - (MASConstraint * (^)(id))greaterThanOrEqualTo {
     return ^id(id attribute) {
         return self.equalToWithRelation(attribute, NSLayoutRelationGreaterThanOrEqual);
     };
 }
 
+- (MASConstraint * (^)(id))mas_greaterThanOrEqualTo {
+    return ^id(id attribute) {
+        return self.equalToWithRelation(attribute, NSLayoutRelationGreaterThanOrEqual);
+    };
+}
+
 - (MASConstraint * (^)(id))lessThanOrEqualTo {
     return ^id(id attribute) {
         return self.equalToWithRelation(attribute, NSLayoutRelationLessThanOrEqual);
     };
 }
 
+- (MASConstraint * (^)(id))mas_lessThanOrEqualTo {
+    return ^id(id attribute) {
+        return self.equalToWithRelation(attribute, NSLayoutRelationLessThanOrEqual);
+    };
+}
+
 #pragma mark - MASLayoutPriority proxies
 
 - (MASConstraint * (^)())priorityLow {
@@ -103,6 +121,11 @@
     };
 }
 
+- (MASConstraint * (^)(id offset))mas_offset {
+    // Will never be called due to macro
+    return nil;
+}
+
 #pragma mark - NSLayoutConstraint constant setter
 
 - (void)setLayoutConstantWithValue:(NSValue *)value {
@@ -131,16 +154,6 @@
     return self;
 }
 
-#pragma mark - Autocompletion dummies
-
-- (MASConstraint * (^)(id attr))mas_equalTo { return nil; }
-
-- (MASConstraint * (^)(id attr))mas_greaterThanOrEqualTo { return nil; }
-
-- (MASConstraint * (^)(id attr))mas_lessThanOrEqualTo { return nil; }
-
-- (MASConstraint * (^)(id offset))mas_offset { return nil; }
-
 #pragma mark - Abstract
 
 - (MASConstraint * (^)(CGFloat multiplier))multipliedBy { methodNotImplemented(); }