[generate/docs/examples] allow overriding individual example files based on version

scripts/generate/templates/api_methods.tmpl

@@ -25,7 +25,7 @@ client.<%= action.name %>([params, [callback]])
 
 The default method is `<%= action.spec.method || 'GET' %>` and the usual <<api-conventions,params and return values>> apply. See <%= action.docUrl %>[the elasticsearch docs] for more about this method.
 
-<%= examples(action.name) %>
+<%= action.examples %>
 
 <% if (_.size(action.allParams)) { %>
 *Params*

scripts/generate/templates/index.js

@@ -66,18 +66,6 @@ var templateGlobals = {
     }
   },
 
-  examples: function (action) {
-    try {
-      return fs.readFileSync(path.join(__dirname, '../../../docs/_examples/' + action + '.asciidoc'));
-    } catch (e) {
-      if (~e.message.indexOf('ENOENT')) {
-        return '// no examples';
-      } else {
-        throw e;
-      }
-    }
-  },
-
   paramType: function (type) {
     switch (type && type.toLowerCase ? type.toLowerCase() : 'any') {
     case 'time':