added chatter function

lib/lang.json

@@ -0,0 +1,37 @@
+{
+  "greet":[
+    "hi",
+    "hey",
+    "howdy",
+    "good morning",
+    "good afternoon",
+    "good day",
+    "good evening"
+      ],
+  "bye":[
+    "see you later",
+    "bye",
+    "later"
+      ],
+  "friend":[
+    "friend",
+    "pal",
+    "buddy",
+    "townie",
+    "fellow"
+    ],
+  "months":{
+    "01":"january",
+    "02":"february",
+    "03":"march",
+    "04":"april",
+    "05":"may",
+    "06":"june",
+    "07":"july",
+    "08":"august",
+    "09":"september",
+    "10":"october",
+    "11":"november",
+    "12":"december"
+  }
+}