fix(readme): added title to the dataset instance example

README.md

@@ -102,6 +102,7 @@ Therefore, this dataset entry can be represented in json in the following format
 
 ```sh
 {
+  "title": "Всем привет. Нужна помощь богов фотошопа, на картинке надо изменить дату на 09/03/2016 и значения тесто на 86.500++",
   "topics": [
     {
       "posts": [
@@ -132,7 +133,7 @@ Therefore, this dataset entry can be represented in json in the following format
 
 ### Dataset fields
 
-In `written` configuration the dataset is represented as a list of `Thread` objects, each `Thread` has a single property `topics`, which contains a list of `Topic` objects. Each `Topic` object has a single property `posts`, which points to the list of `Post` objects, making up the `Topic`. Each `Post` object contains a single property `text` which contains text representation of the post (essentially `text` is `html` code without `tags` and explicit links to other posts; there may still be implicit links to other posts in a form of quotes, prefixed with `>` symbol).  
+In `written` configuration the dataset is represented as a list of `Thread` objects, each `Thread` has a single property `topics`, which contains a list of `Topic` objects. Each `Topic` object has a single property `posts`, which points to the list of `Post` objects, making up the `Topic`. Each `Post` object contains a single property `text` which contains text representation of the post (essentially `text` is `html` code without `tags` and explicit links to other posts; there may still be implicit links to other posts in a form of quotes, prefixed with `>` symbol). As an additional field, each instance has a property `title` which is equivalent to the thread's main post content.  
 In `spoken` configuration the structure is basically the same, but some `Thread` objects have and additional property `speech` with a spoken representation of the thread.
 
 [archive]: https://2ch.hk/b/arch/