README: add mount.davfs example

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

README.md

@@ -44,9 +44,44 @@ Serving HTTPS:// :9999
 
 # Accompanying Clients
 
-There are a number of webdav clients.
+There are a number of [webdav clients](http://www.webdav.org/projects/).
+
+## ChromeOS
+
 For my specific use case, I am working with ChromeOS and there is a [WebDAV Storage Provider](https://chrome.google.com/webstore/detail/webdav-file-system/hmckflbfniicjijmdoffagjkpnjgbieh?hl=en).
 
+## Linux
+
 For Linux hosts, there is a package commonly `davfs2`, that provides a `mount.davfs` command.
 See `mount.davfs(8)` man page for more information.
 
+Basic example:
+```bash
+[vbatts@valse] {master} ~$ sudo mount.davfs https://bananaboat.usersys:9999/ ./x
+Please enter the username to authenticate with server
+https://bananaboat.usersys:9999/ or hit enter for none.
+  Username: vbatts
+Please enter the password to authenticate user vbatts with server
+https://bananaboat.usersys:9999/ or hit enter for none.
+  Password:  
+mount.davfs: the server certificate is not trusted
+  issuer:      Acme Co
+  subject:     Acme Co
+  identity:    localhost
+  fingerprint: ce:19:a6:e7:0a:85:c2:01:fb:71:a6:bf:dd:56:3a:47:30:a8:7a:37
+You only should accept this certificate, if you can
+verify the fingerprint! The server might be faked
+or there might be a man-in-the-middle-attack.
+Accept certificate for this session? [y,N] y
+[vbatts@valse] {master} ~$ ls x/file
+x/file
+[vbatts@valse] {master} ~$ cat !$
+cat x/file
+[vbatts@valse] {master} ~$ echo Howdy > !$
+echo Howdy > x/file
+[vbatts@valse] {master} ~$ cat x/file
+Howdy
+[vbatts@valse] {master} ~$ sudo umount ./x
+/sbin/umount.davfs: waiting while mount.davfs (pid 8931) synchronizes the cache .. OK
+```
+