Composer - fix installing latest version of robo/twig - closes #69

Author: zdenekdrahos

composer.json

@@ -19,15 +19,15 @@
     "require": {
         "php": ">=5.4",
         "ext-xsl": "*",
-        "consolidation/robo": "<=1",
+        "consolidation/robo": "~0|~1",
         "phpmd/phpmd" : "*",
         "phploc/phploc": "*",
         "symfony/dependency-injection": ">=2.8",
         "symfony/filesystem": ">=2.8",
         "symfony/process": ">=2.8",
         "symfony/finder": ">=2.8",
         "symfony/yaml": ">=2.8",
-        "twig/twig": "<=2",
+        "twig/twig": "~1|~2",
         "pdepend/pdepend": "*",
         "sebastian/phpcpd": "*",
         "squizlabs/php_codesniffer": "*",