Update README

README.md

@@ -23,4 +23,27 @@ The Best Photo Extension APP on iOS
 
 	Celluloid can reconstructs the past edits, it can allow users to alter or revert past edits or add new edit.
 
-4. Filter, Bubble, Sticker and Collage features for photo editing.
+4. Filter, Bubble, Sticker and Collage features for photo editing.
+
+
+##Technology
+
+###Cocoa:
+
+1. AutoLayout + StackView
+
+	- layout
+	- adaptivity
+	- multiasking
+
+2. Core Image
+
+3. PhotoKit
+
+4. Photo Extension
+
+5. Cocoa Touch Framework
+
+	- Code Sharing
+	- Code Reuse
+