updating the composer file

Author: dmolsen

composer.json

@@ -1,9 +1,10 @@
 {
-	"name":             "PatternLab/TwigPatternEngine",
+	"name":             "pattern-lab/patternengine-php-twig",
 	"description":      "Twig-based Pattern Engine for the PHP version of Pattern Lab",
 	"keywords":         ["twig", "pattern lab", "pattern engine"],
 	"homepage":         "http://patternlab.io",
 	"license":          "MIT",
+	"type":             "patternlab-patternengine",
 	"authors": [
 		{
 			"name":         "Dave Olsen",
@@ -12,12 +13,23 @@
 			"role":         "Lead Developer"
 		}
 	],
+	"support": {
+		"issues":         "https://github.com/pattern-lab/patternengine-php-twig/issues",
+		"wiki":           "http://patternlab.io/docs/",
+		"source":         "https://github.com/pattern-lab/patternengine-php-twig/releases"
+	},
 	"autoload": {
 		"psr-0": {
 			"PatternLab\\TwigPatternEngine": "src/"
 		}
 	},
 	"require": {
-		"twig/twig": "v1.15.1"
+		"php":            ">=5.3.6",
+		"twig/twig":      "v1.15.1"
+	},
+	"extra": {
+		"config": [
+			{ "patternExtension": "twig" }
+		]
 	}
 }