Update to JSON Genre Tag code

Discovered that not all books have two legit genre tags.  Made the second line optional to prevent it failing out on books with only one tag.

Author: macr0dev

Contents/Code/__init__.py

@@ -20,7 +20,7 @@ def json_decode(output):
 
 
 # URLs
-VERSION_NO = '1.2017.11.09.5'
+VERSION_NO = '1.2017.11.10.1'
 
 REQUEST_DELAY = 0       # Delay used when requesting HTML, may be good to have to prevent being banned from the site
 
@@ -499,7 +499,10 @@ def update(self, metadata, media, lang, force=False):
                         #for key in json_data:
                         #    Log('{0}:{1}'.format(key, json_data[key]))
                         genre1=json_data['itemListElement'][1]['item']['name']
-                        genre2=json_data['itemListElement'][2]['item']['name']
+                        try:  # Not all books have two genre tags.
+                            genre2=json_data['itemListElement'][2]['item']['name']
+                        except:
+                            continue
 
             for r in html.xpath('//li[contains (@class, "seriesLabel")]'):
                 series = self.getStringContentFromXPath(r, '//li[contains (@class, "seriesLabel")]//a[1]')