Added package WakaTime to w.json

repository/w.json

 {
 	"schema_version": "2.0", 
 	"packages": [
+		{
+			"name": "WakaTime", 
+			"details": "https://github.com/wakatime/sublime-wakatime", 
+			"releases": [
+				{
+					"sublime_text": "*", 
+					"details": "https://github.com/wakatime/sublime-wakatime/tags"
+				}
+			]
+		},
 		{
 			"name": "Web Encoders", 
 			"details": "https://github.com/revolunet/sublimetext-web-encoders",