Updated nlohmann::basicjson (markdown)

nlohmann::basicjson.md

@@ -33,7 +33,19 @@ template <
 | `number_integer_t` | `NumberIntegerType` |
 | `number_float_t` | `NumberFloatType` |
 | `list_init_t` | `std::initializer_list<basic_json>` |
-| `json` | basic_json<> |
+| `json` | `basic_json<>` |
+
+Note the type `json` is a typedef for the class `basic_json` with its default types, resulting in the following typedefs:
+
+| Type | Definition |
+| --- | --- |
+| `json::object_t` | `std::map<std::string, json>` |
+| `json::array_t` | `std::vector<json>` |
+| `json::string_t` | `std::string` |
+| `json::boolean_t` | `bool` |
+| `json::number_integer_t` | `int64_t` |
+| `json::number_float_t` | `double` |
+| `json::list_init_t` | `std::initializer_list<json>` |
 
 ## Member types
 
@@ -73,7 +85,8 @@ template <
 
 ### Iterators
 
-- `begin`, `cbegin`
+- [**begin**, **cbegin**](https://github.com/nlohmann/json/wiki/nlohmann::basicjson::begin)<br>
+  returns an iterator to the beginning
 - `end`, `cend`
 - `rbegin`, `crbegin`
 - `rend`, `crend`