Added exception handling for voting if the user isnt logged in.

rtv/utils.py

@@ -15,7 +15,8 @@ from .errors import EscapePressed
 HELP = """
 Global Commands
   `UP/DOWN` or `j/k`  : Scroll to the prev/next item
-  `r` or `F5`         : Refresh the current page
+  `a/z`               : Upvote/downvote the selected item
+  `r`                 : Refresh the current page
   `q`                 : Quit the program
   `o`                 : Open the selected item in the default web browser
   `?`                 : Show this help message
@@ -315,4 +316,4 @@ def curses_session():
             stdscr.keypad(0)
             curses.echo()
             curses.nocbreak()
-            curses.endwin()
+            curses.endwin()