title: UIGraphicsContext creating a rounded corner CGRect
body: <p>I'm using this code to create a filled rectangle with text and adding it to an image</p>
  
  <pre><code>CGRect textRect = CGRectMake(0, p_point.y, p_image.size.width+15, p_image.size.height+10)    
  [[UIColor colorWithRed:(70/255.0) green:(70/255.0) blue:(70/255.0) alpha:1] set];
  CGContextFillRect(UIGraphicsGetCurrentContext(), textRect);
  [[UIColor whiteColor] set];
  [p_text drawInRect:textRect withFont:font lineBreakMode:NSLineBreakByTruncatingTail alignment:NSTextAlignmentCenter];
  UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
  </code></pre>
  
  <p>i wish the rectangle will have round corners...</p>