fix da typo

README.md

@@ -1,7 +1,7 @@
 cpozzi
 ======
 
-**cpozzi** is a new password manager developer following HackingTeam's security standards.
+**cpozzi** is a new password manager developed following HackingTeam's security standards.
 It stores all your password in a **.xlsx** file (~/passwords.xlsx) obviously in clear text because "we don't have anything to hide".
 
 Usage