update list of filters to be installed via pear installer

[kenguest]

Some filters weren't being included when installing php_beautifier via PEAR.

This pull-request fixes this issue.

[kenguest]

I've also added a --list command so that the php_beautifier cli script can list found/added filters.
Output looks like the following:

kguest@radagast:~/dev/code/PHP_Beautifier$ php scripts/php_beautifier -i 

The installed PHP_Beautifier filters are:

ArrayNested               - Filter for PHP_Beautifier
BreakLongLists            - Break long arrays, function definitions and function calls
Default                   - Default Filter for PHP_Beautifier
DocBlock                  - Filter for PHP_Beautifier
EqualsAlign               - Filter for PHP_Beautifier
Fluent                    - Filter for PHP_Beautifier
IndentStyles              - Filter the code in 4 different indent styles: K&R, Allman, Whitesmiths and GNU
KeepEmptyLines            - Keep a single empty line where empty lines can be found
ListClassFunction         - Create a list of functions and classes in the script
Lowercase                 - Lowercase all control structures. Parse the output with another Filters
NewLines                  - Add new lines after or before specific contents
Pear                      - Filter the code to make it compatible with PEAR Coding Specs
SpaceOpAssignments        - Add space before operator+assignments
phpBB                     - Filter the code to make it compatible with phpBB Coding Standards