Update README

README

@@ -1,26 +1,21 @@
-Openufp
-=======
-
+# Openufp
 Open URL Filtering Proxy is an URL Filtering Server for N2H2 or Websense compatible devices.
 It supports multiple back ends like url blacklist file, squidguard and proxy servers like dansguardian.
 This project has been known as n2h2p.
 
 
-Install
-=====
-
+# Install
 Just type "make" followed by "sudo make install".
 Make sure you have libdb and libdb-dev installed, preferable version 5.1 or higher.
 
 
-Usage
-=====
-
+# Usage
+```
 Usage: openufp [OPTIONS] <-n|-w> <BACKEND>
 
 OPTIONS:
    -l PORT   on which port openufp will listen for incoming requests
-   -r URL    when url is denied the client will be redirected to this url; n2h2 only
+   -r URL    when url is denied the client will be redirected to this url
    -c SECS   cache expire time in seconds; default 3600; 0 disables caching
    -C URL    remove specified URL from cache
    -d LEVEL  debug level 1-3
@@ -36,13 +31,10 @@ BACKEND:
    -f FILE   use the blacklist file backend
              FILE is a file which contains blacklisted urls
    -g        use the squidGuard backend
+```
 
 
-
-Note
-====
-
+# Note
 The default location of the cache db is /var/cache/openufp/cache.db.
 When squidguard backend is used be sure that this program has rw permissions
 to the squidguard db files.
-