Update README.md

Added examples to show =ro flag and globbing, and that shows that globbing in fstab should not be escaped

If it is, mergerfs manages to mount something that shows up with  ????? in ls, and cant be accessed or doesn't contain anything. TODO for someone to explain why.

README.md

@@ -97,11 +97,11 @@ start with one of the following option sets.
 
 ### Command Line
 
-`mergerfs -o cache.files=partial,dropcacheonclose=true,category.create=mfs /mnt/hdd0:/mnt/hdd1 /media`
+`mergerfs -o cache.files=partial,dropcacheonclose=true,category.create=mfs /mnt/hdd\*:/mnt/otherhdd:/mnt/rohdd=ro /media`
 
 ### /etc/fstab
 
-`/mnt/hdd0:/mnt/hdd1 /media fuse.mergerfs cache.files=partial,dropcacheonclose=true,category.create=mfs 0 0`
+`/mnt/hdd*:/mnt/otherhdd:/mnt/rohdd=ro /media fuse.mergerfs cache.files=partial,dropcacheonclose=true,category.create=mfs 0 0`
 
 ### systemd mount