message: memo: small documentation update
diff: @@ -587,8 +587,9 @@ I deeply appreciate the help of the following people.
  - [Yixin Zhang](https://github.com/qwename) fixed an integer overflow check.
  - [Bosswestfalen](https://github.com/Bosswestfalen) merged two iterator classes into a smaller one.
  - [Daniel599](https://github.com/Daniel599) helped to get Travis execute the tests with Clang's sanitizers.
  +- [Jonathan Lee](https://github.com/vjon) fixed an example in the README file.
  -Thanks a lot for helping out!
  +Thanks a lot for helping out! Please [let me know](mailto:mail@nlohmann.me) if I forgot someone.
  ## Notes
  @@ -601,6 +602,8 @@ Thanks a lot for helping out!
  - [Unicode noncharacters](http://www.unicode.org/faq/private_use.html#nonchar1) will not be replaced by the library.
  - Invalid surrogates (e.g., incomplete pairs such as `\uDEAD`) will yield parse errors.
  - The strings stored in the library are UTF-8 encoded. When using the default string type (`std::string`), note that its length/size functions return the number of stored bytes rather than the number of characters or glyphs.
  +- The code can be compiled without C++ **runtime type identification** features; that is, you can use the `-fno-rtti` compiler flag.
  +- **Exceptions** are used widly within the library. They can, however, be switched off with either using the compiler flag `-fno-exceptions` or by defining the symbol `JSON_NOEXCEPTION`. In this case, exceptions are replaced by an `abort()` call.
  ## Execute unit tests
  