loading secondary skill bonuses from config/skills.json works (kind of)

config/gameConfig.json

@@ -76,5 +76,9 @@
 		"config/spells/other.json",
 		"config/spells/timed.json",
 		"config/spells/ability.json"
+	],
+	"skills" :
+	[
+        "config/skills.json"
 	]
 }

config/schemas/skill.json

@@ -0,0 +1,33 @@
+{
+
+	"type":"object",
+	"$schema": "http://json-schema.org/draft-04/schema",
+
+	"title" : "VCMI skill format",
+	"description" : "Format used to replace bonuses provided by secondary skills in VCMI",
+
+	"definitions" : {
+
+        "skillBonus":{
+            "description": "Set of bonuses provided by skill at given level",
+            "type": "array",
+            "items":{
+                "$ref" : "vcmi:bonus"
+            }
+        },
+
+        "required" : ["basic", "advanced", "expert"],
+
+        "properties": {
+            "basic":{
+                "$ref" : "#/definitions/skillBonus"
+            },
+            "advanced":{
+                "$ref" : "#/definitions/skillBonus"
+            },
+            "expert":{
+                "$ref" : "#/definitions/skillBonus"
+            },
+        }
+	}
+}

config/skills.json

@@ -0,0 +1,29 @@
+{
+    "estates" : {
+        "index" : 13,
+        "basic" : [
+            {
+                "subtype" : 13,
+                "type" : "SECONDARY_SKILL_PREMY",
+                "val" : 250,
+                "valueType" : "BASE_NUMBER"
+            }
+        ],
+        "advanced" : [
+            {
+                "subtype" : 13,
+                "type" : "SECONDARY_SKILL_PREMY",
+                "val" : 500,
+                "valueType" : "BASE_NUMBER"
+            }
+        ],
+        "expert" : [
+            {
+                "subtype" : 13,
+                "type" : "SECONDARY_SKILL_PREMY",
+                "val" : 1000,
+                "valueType" : "BASE_NUMBER"
+            }
+        ]
+    }
+}