Update README.md

Author: kal179

README.md

@@ -3,7 +3,7 @@ Basic python CLI programs as examples<br>
 All the examples are useful examples<br>
 These examples are of beginners' level<br>
 <br>
-Hey guys I wrote these programs when I was just starting up with programming, now I realize that many of 'em feel very un-professional and useless so I decided to go one by one through all and make 'em more usefull and professional !
+Hey guys I wrote these programs when I was just starting up with programming, now I realize that many of 'em feel very un-professional and useless so I decided to go one by one through all and make 'em more useful and professional !
 <br>
 
 Note: In 2.x versions input isn't useful , lly , in 3.x versions raw_input isn't useful. Also, xrange() and other methods are discontinued or changed in 3.x versions of python. Change the keywords accordingly!