[Symfony2] [Composer] added composer specs and fixed header in phpcs executable

updated external sniff path detection

added symfony2 standard

updated ruleset

object instance in variable validation removed from ruleset

siniff rules fixed

updated symfony2 cs

updated rules

updated rules
updated rules
update rules
updated symfony2 ruleset
updated
updated
updated spec
updated ruleset
Merge branch 'master' of https://github.com/squizlabs/PHP_CodeSniffer

Conflicts:
	CodeSniffer.php
updated symfony2 code style
psr2 empty lines count fix
added new sniff
added some forbidden functions
added pre commit hook example
fix fullstop message
updated code style
added array [] alias
unknown tags disabled
else if rule fix
elseif rule updated