Merge branch 'master' of https://github.com/alandefreitas/matplotplusplus

Author: alandefreitas

README.md

@@ -30,12 +30,15 @@ Data visualization can help programmers and scientists identify trends in their
   - [Common Utilities](#common-utilities)
 - [Motivation and Details](#motivation-and-details)
 - [Integration](#integration)
-  - [CMake (manual download)](#cmake-manual-download)
-  - [CMake (automatic download)](#cmake-automatic-download)
-  - [Other build systems](#other-build-systems)
   - [Dependencies](#dependencies)
+  - [Build the examples](#build-the-examples)
+  - [Installing](#installing)
+  - [As a CMake package](#as-a-cmake-package)
+  - [As a CMake subdirectory](#as-a-cmake-subdirectory)
+  - [CMake with Automatic Download](#cmake-with-automatic-download)
+  - [Other build systems](#other-build-systems)
   - [Backends](#backends)
-  - [Contributing](#contributing)
+- [Contributing](#contributing)
   - [Contributors :sparkles:](#contributors-sparkles)
 - [References](#references)