Rewrite everything to be more elegant, prevent changing to non-existent drives, add the option to quit print and list while paging and modify the readme accordingly, and add info on the EttinOS-extra repository to the readme.

README.MD

@@ -64,8 +64,8 @@ Commands included in EttinOS:
   * PRINT:  Print a text file. Syntax: PRINT FILE
 
 Both LIST and PRINT page their output if all of it does not fit on the
-screen at the same time. Press any key to continue printing after each
-screen or escape to quit the program.
+screen at the same time. Press any key other than escape to continue
+printing after each screen or escape to quit the program.
 
 Programming
 -----------