iwconfig zsh completion: replace egrep usage with grep -E
-rw-r--r-- 110 .gitignore
-rw-r--r-- 1293 README.md
drwxr-xr-x - debian
drwxr-xr-x - doc
drwxr-xr-x - etc
drwxr-xr-x - usr_share_grml