📝 added TOC to README #383

README.md

@@ -11,6 +11,22 @@
 [![Github Issues](https://img.shields.io/github/issues/nlohmann/json.svg)](http://github.com/nlohmann/json/issues)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/289/badge)](https://bestpractices.coreinfrastructure.org/projects/289)
 
+- [Design goals](#design-goals)
+- [Integration](#integration)
+- [Examples](#examples)
+  - [JSON as first-class data type](#json-as-first-class-data-type)
+  - [Serialization / Deserialization](#serialization--deserialization)
+  - [STL-like access](#stl-like-access)
+  - [Conversion from STL containers](#conversion-from-stl-containers)
+  - [JSON Pointer and JSON Patch](#json-pointer-and-json-patch)
+  - [Implicit conversions](#implicit-conversions)
+  - [Binary formats (CBOR and MessagePack)](#binary-formats-cbor-and-messagepack)
+- [Supported compilers](#supported-compilers)
+- [License](#license)
+- [Thanks](#thanks)
+- [Notes](#notes)
+- [Execute unit tests](#execute-unit-tests)
+
 ## Design goals
 
 There are myriads of [JSON](http://json.org) libraries out there, and each may even have its reason to exist. Our class had these design goals:
@@ -48,6 +64,8 @@ to the files you want to use JSON objects. That's it. Do not forget to set the n
 
 ## Examples
 
+### JSON as first-class data type
+
 Here are some examples to give you an idea how to use the class.
 
 Assume you want to create the JSON object
@@ -421,6 +439,31 @@ int vi = jn.get<int>();
 // etc.
 ```
 
+### Binary formats (CBOR and MessagePack)
+
+Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance over a network. Hence, the library supports [CBOR](http://cbor.io) (Concise Binary Object Representation) and [MessagePack](http://msgpack.org) to efficiently encode JSON values to byte vectors and to decode such vectors.
+
+```cpp
+// create a JSON value
+json j = R"({"compact": true, "schema": 0})"_json;
+
+// serialize to CBOR
+std::vector<uint8_t> v_cbor = json::to_cbor(j);
+
+// 0xa2, 0x67, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x63, 0x74, 0xf5, 0x66, 0x73, 0x63, 0x68, 0x65, 0x6d, 0x61, 0x00
+
+// roundtrip
+json j_from_cbor = json::from_cbor(v_cbor);
+
+// serialize to MessagePack
+std::vector<uint8_t> v_msgpack = json::to_msgpack(j);
+
+// 0x82, 0xa7, 0x63, 0x6f, 0x6d, 0x70, 0x61, 0x63, 0x74, 0xc3, 0xa6, 0x73, 0x63, 0x68, 0x65, 0x6d, 0x61, 0x00
+
+// roundtrip
+json j_from_msgpack = json::from_msgpack(v_msgpack);
+```
+
 
 ## Supported compilers
 
@@ -561,7 +604,7 @@ To compile and run the tests, you need to execute
 $ make check
 
 ===============================================================================
-All tests passed (8905518 assertions in 36 test cases)
+All tests passed (11201886 assertions in 43 test cases)
 ```
 
 Alternatively, you can use [CMake](https://cmake.org) and run