composer: added donation banner

Author: dg

composer.json

@@ -26,7 +26,8 @@
 		"ext-intl": "for script transliteration in Strings::webalize() and toAscii()",
 		"ext-mbstring": "to use Strings::lower() etc...",
 		"ext-xml": "to use Strings::length() etc. when mbstring is not available",
-		"ext-gd": "to use Image"
+		"ext-gd": "to use Image",
+		"https://nette.org/donate": "\u001b[1;37;42m Please consider supporting Nette via a donation \u001b[0m"
 	},
 	"conflict": {
 		"nette/nette": "<2.2"