Added dark mode

Author: jaypy-code

README.md

@@ -17,7 +17,7 @@ samples, guidance on mobile development, and a full API reference.
 
 
 # TODO
-[ ] Add dark mode  
+[*] Add dark mode  
 [*] Change status bar color to primary color  
 [*] Change navigator bar color to primary color  
 [ ] Toggle rtl and ltr view