revert README.md

Author: StephanKa

README.md

@@ -7,6 +7,20 @@ With this project, we want to provide an example and starting point for C++ proj
 The project has initially been forked/copied from [Jason Turner's cpp_starter_project](https://github.com/lefticus/cpp_starter_project).
 
 
+<hr>
+## original README:
+
+# cpp_starter_project
+
+[![codecov](https://codecov.io/gh/lefticus/cpp_starter_project/branch/master/graph/badge.svg)](https://codecov.io/gh/lefticus/cpp_starter_project)
+
+[![Build Status](https://travis-ci.org/lefticus/cpp_starter_project.svg?branch=master)](https://travis-ci.org/lefticus/cpp_starter_project)
+
+[![Build status](https://ci.appveyor.com/api/projects/status/ro4lbfoa7n0sy74c/branch/master?svg=true)](https://ci.appveyor.com/project/lefticus/cpp-starter-project/branch/master)
+
+![CMake](https://github.com/lefticus/cpp_starter_project/workflows/CMake/badge.svg)
+
+
 ## Getting Started
 
 ### Use the Github template
@@ -213,6 +227,30 @@ The following compilers should work:
 	https://github.com/include-what-you-use/include-what-you-use#how-to-install
 	</details>
 
+#### GUI libraries
+This project can be made to work with several optional GUI frameworks.
+
+If desired, you should install the following optional dependencies as
+directed by their documentation, linked here:
+
+- [FLTK](https://www.fltk.org/doc-1.4/index.html)
+- [GTKMM](https://www.gtkmm.org/en/documentation.html)
+- [QT](https://doc.qt.io/)
+
+The following dependencies can be downloaded automatically by CMake and Conan.
+All you need to do to install them is to turn on a CMake flag during
+configuration.
+If you run into difficulty using them, please refer to their documentation,
+linked here:
+
+- [NANA](http://nanapro.org/en-us/documentation/)
+- [SDL](http://wiki.libsdl.org/FrontPage)
+- [IMGUI](https://github.com/ocornut/imgui/tree/master/docs):
+  This framework depends on SFML, and if you are using Linux, you may need
+  to install several of SFML's dependencies using your package manager. See
+  [the SFML build tutorial](https://www.sfml-dev.org/tutorials/2.5/compile-with-cmake.php)
+  for specifics.
+
 ## Build Instructions
 
 ### Build directory