Created Use raylib with Eclipse (markdown)

Use-raylib-with-Eclipse.md

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+### About Eclipse IDE for C/C++
+
+**Eclipse** is the most widely used **IDE** for **Java** and it is famous for its **Java Integrated Development Environment (IDE)**, but there is also a cool version of the **IDE** which supports **C/C++**, for more info:
+
+https://www.eclipse.org/downloads/packages/release/2018-12/r/eclipse-ide-cc-developers
+
+In this guide we will cover the various installation steps.
+
+### Configuring mingw-w64 on Windows
+
+In order to work with **raylib** and **Eclipse** you need to download the **Mingw-w64 Installer** and follow the steps in the wizard.
+
+When prompted choose the following settings:
+* **Version:** 7.2.0
+* **Architecture:** x86_64
+* **Threads:** win32
+
+Then proceed with the installation.
+
+Once it is finished ensure that there is the path where your **MinGW-w64** has been installed to e.g., **C:\mingw\mingw64\bin** in your **PATH** environment variable (if there is not just add it manually).
+
+### Building raylib
+
+You can follow one of this guides for building **raylib** on your operative system:
+
+* https://github.com/raysan5/raylib/wiki/Working-on-Windows
+* https://github.com/raysan5/raylib/wiki/Working-on-macOS
+* https://github.com/raysan5/raylib/wiki/Working-on-GNU-Linux
+
+### Creating a new C/C++ Project
+
+* Run **Eclipse IDE for C/C++**.
+* From the main menu choose **File > New > C/C++ Project**.
+* Select **C++ Managed Build** and **Next >**.
+* Write the **Project name** then select **Hello World C++ Project** and **MinGW CC** under **Toolchains**.
+* Click on **Finish** to create the new project.
+
+Now you can replace the contents of the main **.cpp** file with some basic examples from the following link:
+
+https://www.raylib.com/examples.html
+
+### Configuring the Project for raylib
+
+* From the main menu choose **Project > Properties**.
+* Now go to **C/C++ Build > Settings > Tool Settings** tab.
+* Under **GCC C++ Compiler > Includes > Include paths (-I)** add the path to your **raylib/src** folder.
+* Under **MinGW C++ Linker > Libraries > Libraries (-l)** add **raylib** and **gdi32** libs.
+* Under **MinGW C++ Linker > Libraries > Library search path (-L)** add the path to the **raylib** static library which you previously builded.
+
+### Build and Run!
+
+* Under the tab **Project Explorer** (you find on the left side of the screen) right click on your project.
+* Select **Build Project** from the popup menu for building your project.
+* Finally right click again on your project and then select **Run As > Local C/C++ Application**.
+
+Now you should be ready to go with **Eclipse**!
+
+Enjoy! :)