Installing Plugin
=================
Simply untar the file in the plugins directory, and make sure it is
in its own directory, and that the name of the directory is the name
of the plugin. For example:

  $ cd /var/www/squirrelmail/plugins
  $ tar -zxvf /home/archives/custom_charset-1.0-1.4.0.tar.gz

Then go to SquirrelMail config directory and run conf.pl.  Choose option
8 and add the plugin.

  $ cd ../config
  $ ./conf.pl

Save configuration changes and exit.

Custom Charset plugin's configuration file can be stored in 
config/custom_charset_config.php or plugins/custom_charset/config.php. See
plugins/custom_charset/config_sample.php for possible configuration options.
If both configuration files are present, plugin prefers file in config/
directory. If configuration files are not present, plugin uses default 
configuration.
