Added method without color param

Author: bachonk

UIImageView+Letters/UIImageView+Letters.h

@@ -30,7 +30,14 @@
 @interface UIImageView (Letters)
 
 /**
- Sets the image property of the view to have a background color and initial text
+ Sets the image property of the view based on initial text. A random background color is automatically generated.
+ 
+ @param string The string used to generate the initials. This should be a user's full name if available
+ */
+- (void)setImageWithString:(NSString *)string;
+
+/**
+ Sets the image property of the view based on initial text and a specified background color.
  
  @param string The string used to generate the initials. This should be a user's full name if available
  @param color (optional) This optional paramter sets the background of the image. If not provided, a random color will be generated

UIImageView+Letters/UIImageView+Letters.m

@@ -26,6 +26,10 @@
 
 @implementation UIImageView (Letters)
 
+- (void)setImageWithString:(NSString *)string {
+    [self setImageWithString:string color:nil];
+}
+
 - (void)setImageWithString:(NSString *)string color:(UIColor *)color {
 
     //
@@ -102,7 +106,6 @@ - (UIImage *)imageSnapshotFromView:(UIView *)inputView {
 
     CGFloat scale = [UIScreen mainScreen].scale;
 
-    // Code attributed to Nick Lockwood on 25/08/2013.
     CGSize size = self.bounds.size;
     if (self.contentMode == UIViewContentModeScaleToFill ||
         self.contentMode == UIViewContentModeScaleAspectFill ||