updated readme

Author: jiangshen

README.md

@@ -1,9 +1,14 @@
-# WurmPaint
+# Wurm Paint
 
-## Changelog
+Android drawing application for annotating the backbone of worms.
+
+<img src="screens/scr_main.jpg" width="50%" height="50%" />
+
+## Releases
 
 ### 1.03 (2017-12-16)
 - Increased image retrieval size
+- Clean up and code optimization
 
 ### 1.02 (2017-12-08)
 - Added Firebase Crashlytics and Performance Monitoring