Updated Corona SDK Entry

Build system only works on MacOSX or Windows so restrict to those platforms for now.

repository/c.json

@@ -1004,6 +1004,7 @@
 			"releases": [
 				{
 					"sublime_text": "*",
+					"platforms": ["osx", "windows"],
 					"details": "https://github.com/coronalabs/CoronaSDK-SublimeText/tree/master"
 				}
 			]