fix README

README.md

@@ -13,7 +13,7 @@ Script for installing faculty printers on Linux via Samba print server.
 ## Disadvantages
 
 -   Printers have to be installed one by one.
--   This is not the prefered way of printing on fi. (Prefered way is via Kerberos.)
+-   This is not the preferred way of printing on FI. (Preferred way is via Kerberos.)
 
 
 ## Pre-requirements
@@ -39,7 +39,7 @@ For example, to install printer `lj2b` run
 ./install.pl lj2b
 ```
 
-After running the script, you will be prompted for you faculty login(username and password) and for cron instalation if not already installed.
+After running the script, you will be prompted for you faculty login(username and password) and for cron installation if not already installed.
 
 You may be prompted for faculty login once again on the first print job depending on your distribution.
 
@@ -50,9 +50,7 @@ Currently available printers:
 -   copy2a
 -   copy3a
 -   copy4a
--   copy4b
 -   copy4c
--   copy5b
 -   copy5c
 -   lj2a
 -   lj2b