change property separators from - to _ (#1)

* Update and rename exampleData.json to exampleData.json.md
* Update ctr.json

edgg/ctr.json

@@ -4,17 +4,17 @@
     "frequency": "135.650",
     "abbreviation": "PADH",
     "description": "Langen Radar PADH",
-    "schedule-minstation": [
+    "schedule_minstation": [
       "EDLL",
       "EDFF"
     ],
-    "schedule-groups": [
+    "schedule_groups": [
       "EDLL",
       "EDGG"
     ],
-    "relevant-airports": [
+    "relevant_airports": [
       "EDDL",
       "EDDK"
     ]
   }
-]
+]

exampleData.json.md

@@ -0,0 +1,16 @@
+```
+[
+  {
+    "logon": "EDXX_XXX_CTR",
+    "frequency": "199.999",
+    "abbreviation": "abbr.",
+    "description": "Bremen/Langen/Muenchen Radar SectorX",
+    "schedule_minstation": ["EDXX"],
+    "schedule_groups": ["EDXX"],
+    "relevant_airports": ["EDXX"]
+  }
+]
+```
+- `schedule_minstation` (optional) in welcher Buchungsübersicht diese Station auftauchen soll.
+- `schedule_groups` (optional) in welcher Buchungsübersicht diese Station auftauchen soll.
+- `relevant_airports` (optional) welche Airports werden von der Station gecovered. Beginnt die Station mit dem ICAO Code eines Airports muss dieser hier nicht angegeben werden.