Fix UniSharp#4, thanks @facilinfo and @midium

Author: youchenlee

composer.json

@@ -27,7 +27,7 @@
 		}
 	},
 	"require": {
-		"illuminate/support": "~5.0.17|5.1.*"
+		"illuminate/support": "~5.0"
 	},
 	"minimum-stability": "dev"
 }