Update README.md

README.md

@@ -57,7 +57,9 @@ An example looks as follows:
   'message': 'Change to sin() function with noise\n',
   'lang': 'Python',
   'license': 'mit',
-  'repos': 'MorganR/basic-gaussian-process'
+  'repos': 'MorganR/basic-gaussian-process',
+  'returncode': 0,
+  'stderr': ''
 }
 ```
 
@@ -74,6 +76,8 @@ The data fields are the same among all splits:
 - `lang`: programming language
 - `license`: license of the repository the code stems from
 - `repos`: name of the the repository the code stems from (if multiple, they are comma separated)
+- `returncode`: if applicable errorcode during scraping (0 = no error)
+- 'stderr': if applicable the error that occured during scraping (empty = no error)
 
 ### Data Splits