chore: .jscs.json small fix

.jscs.json

@@ -11,7 +11,6 @@
   ],
   "requireOperatorBeforeLineBreak": true,
   "requireCamelCaseOrUpperCaseIdentifiers": true,
-  "validateIndentation": 2,
   "validateQuoteMarks": "'",
   "disallowMultipleLineStrings": true,
   "disallowMixedSpacesAndTabs": true,

dist/showdown.js

@@ -1,4 +1,4 @@
-;/*! showdown 23-12-2016 */
+;/*! showdown 30-12-2016 */
 (function(){
 /**
  * Created by Tivie on 13-07-2015.