added TPKeyboardAvoidingAdditionsOptions protocol to allow for views …

…to override specific pieces of functionality as needed

added TPKeyboardAvoiding_idealOffsetForViewAlwaysTop to allow views to be able to float to the top instead of middle
	use case: have an 'autocomplete' style dropdown for one of my textfields. Need as much room as possible between the field and the keyboard, this will (safely) alter the math in calculating the scroll position so the textfield can specify that it needs to be on the top instead of the middle

# Conflicts:
#	TPKeyboardAvoiding/UIScrollView+TPKeyboardAvoidingAdditions.m

TPKeyboardAvoiding/UIScrollView+TPKeyboardAvoidingAdditions.h

@@ -8,6 +8,10 @@
 
 #import <UIKit/UIKit.h>
 
+@protocol TPKeyboardAvoidingAdditionsOptions <NSObject>
+- (BOOL)TPKeyboardAvoiding_idealOffsetForViewAlwaysTop;
+@end
+
 @interface UIScrollView (TPKeyboardAvoidingAdditions)
 - (BOOL)TPKeyboardAvoiding_focusNextTextField;
 - (void)TPKeyboardAvoiding_scrollToActiveTextField;

TPKeyboardAvoiding/UIScrollView+TPKeyboardAvoidingAdditions.m

@@ -356,6 +356,11 @@ -(CGFloat)TPKeyboardAvoiding_idealOffsetForView:(UIView *)view withViewingAreaHe
     __block CGFloat offset = 0.0;
 
     CGRect subviewRect = [view convertRect:view.bounds toView:self];
+
+    // Allow views to specify their need to float to the top instead of towards the middle.
+    if ( [view respondsToSelector:@selector(TPKeyboardAvoiding_idealOffsetForViewAlwaysTop)] && [((id<TPKeyboardAvoidingAdditionsOptions>)view) TPKeyboardAvoiding_idealOffsetForViewAlwaysTop] ) {
+        return subviewRect.origin.y;
+    }
 
     __block CGFloat padding = 0.0;
     __block UIEdgeInsets contentInset;