adding rbenv package

related: https://github.com/felipeelias/sublime-text-2-rbenv/issues/6

repository/r.json

@@ -224,6 +224,17 @@
 					}
 				]
 			},
+		{
+			"name": "rbenv",
+			"details": "https://github.com/felipeelias/sublime-text-2-rbenv",
+			"labels": ["rbenv ruby"],
+			"releases": [
+				{
+					"sublime_text": "<3000",
+					"details": "https://github.com/felipeelias/sublime-text-2-rbenv/tree/master"
+				}
+			]
+		},		
 		{
 			"name": "Read Only Buffer",
 			"details": "https://github.com/crazybyte/SublimeReadOnlyBuffer",