added Mocha Test

lib/easterSunday.js

+function getEasterSunday(year) {
+  var k = year / 100 >> 0;
+  var m = 15 + ((3 * k + 3) / 4 >> 0) - ((8 * k + 13) / 25 >> 0);
+  var s = 2 - ((3 * k + 3) / 4 >> 0);
+  var a = year % 19;
+  var d = (19 * a + m) % 30;
+  var r = (d + a / 11 >> 0) / 29 >> 0;
+  var og = (21 + d - r);
+  var sz = 7 - (year + (year / 4 >> 0) + s) % 7;
+  var oe = 7 - (og - sz) % 7;
+  var os = og + oe;
+  return new Date(year, 2, os);
+}
+
+module.exports.getEasterSunday = getEasterSunday;
\ No newline at end of file

lib/holidayMapping.json

@@ -19,24 +19,58 @@
     "122": "Erster Weihnachtstag",
     "123": "Zweiter Weihnachtstag"
   },
-  "sureHolidays": [ "101", "103", "121", "122", "123", "501", "808", "301", "302", "303", "502", "601", "602" ],
+  "sureHolidays": [ "101", "103", "121", "122", "123", "501", "301", "302", "303", "502", "601", "602" ],
   "specificHolidays": [ "1", "106", "111", "131", "2", "815" ],
   "region": {
-    "BW": ["106", "1", "111"],
-    "BY": ["106", "1", "815", "111"],
-    "BE": [],
-    "BB": ["131"],
-    "HB": [],
-    "HH": [],
-    "HE": ["1"],
-    "MV": ["131"],
-    "NI": [],
-    "NW": ["1", "111"],
-    "RP": ["1", "111"],
-    "SL": ["1", "815", "111"],
-    "SN": ["1", "131", "2"],
-    "ST": ["106", "131"],
-    "SH": [],
-    "TH": ["1", "131"]
+    "BW": {
+      "default": ["106", "1", "111"]
+    },
+    "BY": {
+      "default": ["106", "1", "815", "111"],
+      "kath": ["815"],
+      "augsburg": ["808"]
+    },
+    "BE": {
+      "default": []
+    },
+    "BB": {
+      "default": ["131"]
+    },
+    "HB": {
+      "default": []
+    },
+    "HH": {
+      "default": []
+    },
+    "HE": {
+      "default": ["1"]
+    },
+    "MV": {
+      "default": ["131"]
+    },
+    "NI": {
+      "default": []
+    },
+    "NW": {
+      "default": ["1", "111"]
+    },
+    "RP": {
+      "default": ["1", "111"]
+    },
+    "SL": {
+      "default": ["1", "815", "111"]
+    },
+    "SN": {
+      "default": ["1", "131", "2"]
+    },
+    "ST": {
+      "default": ["106", "131"]
+    },
+    "SH": {
+      "default": []
+    },
+    "TH": {
+      "default": ["1", "131"]
+    }
   }
 }
\ No newline at end of file