Update README.md

Author: Arduino3128

README.md

@@ -11,7 +11,7 @@ New GUI for MetaMail
 ### ~Release(MRV 2.1)  
 Fixed Minor Bugs  
 Fixed Typo  
-Added File Attachment size Upgrade option  
+Added Attachment size Upgrade option  
 
 ### ~Release(MRV 2.0)  
 First Stable release