Add -I include parameter to samba.sh (#143)

README.md

@@ -63,6 +63,9 @@ OR set local storage:
                     required arg: "<workgroup>"
                     <workgroup> for samba
         -W          Allow access wide symbolic links
+        -I          Add an include option at the end of the smb.conf
+                    required arg: "<include file path>"
+                    <include file path> in the container, e.g. a bind mount
 
     The 'command' (if provided and valid) will be run instead of samba
 
@@ -82,6 +85,7 @@ ENVIRONMENT VARIABLES
  * `WORKGROUP` - As above, set workgroup
  * `USERID` - Set the UID for the samba server
  * `GROUPID` - Set the GID for the samba server
+ * `INCLUDE` - As above, add a smb.conf include
 
 **NOTE**: if you enable nmbd (via `-n` or the `NMBD` environment variable), you
 will also want to expose port 137 and 138 with `-p 137:137/udp -p 138:138/udp`.