don't define the trailing slash in $BACKUPDIR

This way it is more clear, that `rsync` needs a trailing slash

README.md

@@ -15,18 +15,18 @@ This project maintains a list of directories and files you probably do not need
 
     # define a Backup directory (with trailing slash!)
     # some examples:
-    BACKUPDIR=/media/workspace/home/$USER/
-    BACKUPDIR=/media/$USER/linuxbackup/home/$USER/
-    BACKUPDIR=/media/$USER/USBSTICK/backup/home/$USER/
+    BACKUPDIR=/media/workspace/home/$USER
+    BACKUPDIR=/media/$USER/linuxbackup/home/$USER
+    BACKUPDIR=/media/$USER/USBSTICK/backup/home/$USER
 
     # first specify the "-n" parameter so rsync will simulate its operation. You should use this before you start:
-    rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR
+    rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/
 
     # check for permission denied errors in your homedir:
-    rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR|grep denied
+    rsync -naP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/ | grep denied
 
     # if it is all fine, actually perform your backup:
-    rsync -aP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR
+    rsync -aP --exclude-from=rsync-homedir-local.txt /home/$USER/ $BACKUPDIR/
 
 You can edit the exclude file before execution:
 - All lines starting with a `#` are ignored by rsync, i.e. those directories will be backed up.
@@ -37,7 +37,7 @@ You can edit the exclude file before execution:
 When running locally or with the `--whole-file` option (for backups over SSH), rsync doesn't modify files but replaces them entirely. This allows us to create a snapshot directory (with hardlinks) with the state of the backup directory at a certain point in time.  
 Run this after finishing the `rsync` backup and it'll create a new snapshot:
 
-    BACKUPDIR=/media/workspace/home/$USER/
+    BACKUPDIR=/media/workspace/home/$USER
     SNAPSHOT_DIR="$BACKUPDIR.snapshot_$(date +'%Y-%m-%d_%H%M%S' -u)"
     cp -al $BACKUPDIR $SNAPSHOT_DIR