Print available languages if key not found

Author: excalith

README.md

@@ -45,13 +45,13 @@ You can either use web based [GitCheats App](http://gitcheats.com) from your bro
 
 ## Available Commands:
 
-| _Command_                  | _Description_                                             |
-| -------------------------- | --------------------------------------------------------- |
-| gitcheats                  | Launch gitcheats.com directly                             |
-| gitcheats [command]        | Print command descriptions right into your terminal       |
-| gitcheats --open [command] | Open gitcheats.com in browser with your command filtered  |
-| gitcheats --language [key] | Set your preffered language (Keys: en, tr, tel, hin, kli) |
-| gitcheats --help           | Show commands for the app                                 |
+| _Command_                  | _Description_                                            |
+| -------------------------- | -------------------------------------------------------- |
+| gitcheats                  | Launch gitcheats.com directly                            |
+| gitcheats [command]        | Print command descriptions right into your terminal      |
+| gitcheats --open [command] | Open gitcheats.com in browser with your command filtered |
+| gitcheats --language [key] | Set your preffered language (Default: en)                |
+| gitcheats --help           | Show commands for the app                                |
 
 ## How To Contribute: