Update index.md to add PSR-4

Add PSR-4 to list of accepted PSRs on http://www.php-fig.org/psr/ page.
Force rebuild to pull in latest PSR-0
Merge pull request #126 from philsturgeon/master

Force rebuild to pull in latest PSR-0
Updated submodule reference.
Merge pull request #127 from philsturgeon/update-standards-submodule

Updated submodule reference
Merge pull request #115 from hardyjohnson/patch-1

Update index.md to add PSR-4
Slovenian language added
add Translation
Merge branch 'master' of github.com:4devs/php-fig.github.com
merge patch-slovenian