Update README.md

Author: zengxinzhy

README.md

@@ -14,6 +14,8 @@ The current version of TinyCrayon SDK provides the following three tools:
 ------------ | -------------
 Quick Select Tool | Hair Brush Tool
 
+![untitled-1](https://cloud.githubusercontent.com/assets/4088232/24956166/ffc4285c-1fb8-11e7-9743-209de801e31a.jpg)
+
 Try our sample apps [Image Eraser](https://itunes.apple.com/app/id1072712460), [Color Effect](https://itunes.apple.com/app/id1222383759), [Focus Effect](https://itunes.apple.com/app/id1064333794).
 
 ## Features