Update composer dependencies

Author: ivanlanin

composer.json

@@ -36,12 +36,12 @@
         "ext-xml": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "3.7.*",
+        "phpunit/phpunit": "4.*",
         "phpdocumentor/phpdocumentor":"2.*",
         "squizlabs/php_codesniffer": "1.*",
-        "phpmd/phpmd": "dev-master",
-        "sebastian/phpcpd": "*",
-        "phploc/phploc": "*",
+        "phpmd/phpmd": "2.*",
+        "sebastian/phpcpd": "2.*",
+        "phploc/phploc": "2.*",
         "dompdf/dompdf":"0.6.*",
         "tecnick.com/tcpdf": "6.*",
         "mpdf/mpdf": "5.*"