Fix minor typo: “to to” → “to”.

README.md

@@ -20,7 +20,7 @@ which means you can modify it, redistribute it or use it however you like.
                                      sure that you have sufficient permissions
                                      (run with sudo if needed)
     -i, --ignore-errors              continue on download errors, for example to
-                                     to skip unavailable videos in a playlist
+                                     skip unavailable videos in a playlist
     --abort-on-error                 Abort downloading of further videos (in the
                                      playlist or the command line) if an error
                                      occurs

youtube_dl/__init__.py

@@ -208,7 +208,7 @@ def parseOpts(overrideArguments=None):
     general.add_option('-U', '--update',
             action='store_true', dest='update_self', help='update this program to latest version. Make sure that you have sufficient permissions (run with sudo if needed)')
     general.add_option('-i', '--ignore-errors',
-            action='store_true', dest='ignoreerrors', help='continue on download errors, for example to to skip unavailable videos in a playlist', default=False)
+            action='store_true', dest='ignoreerrors', help='continue on download errors, for example to skip unavailable videos in a playlist', default=False)
     general.add_option('--abort-on-error',
             action='store_false', dest='ignoreerrors',
             help='Abort downloading of further videos (in the playlist or the command line) if an error occurs')