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README.md

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 # raygui
-A simple and easy-to-use IMGUI header-only library
+raygui is simple and easy-to-use IMGUI header-only library.
+
+raygui was inspired by Unity OnGUI immediate mode GUI API.
+
+Initially raygui was conceived as an additional raylib module to create simple GUIs using a raygui graphic style (simple colors, plain rectangular shapes, wide borders, raylib standard font).
+
+## history
+raygui was originally developed to create simple GUIs for some raylib-based tools (without external dependencies, only raylib).
+
+raygui development started on December 2014 by two students (Kevin Gato and Daniel Nicolas), guided by me (@raysan5) to create a simple raylib GUI module. On June 2015, library was mostly complete (including all planned controls) and work started into styling possibilities for the library. Development on [rGuiStyler](https://github.com/raysan5/raygui/tree/master/tools/rGuiStyler) (project named `raygui_styler`) started at that point but resources invested on the tool were quite limited and project didn't move much between for the following year, most of the time was invested in [raylib](https://github.com/raysan5/raylib).
+
+Finally, on the end of May 2016, project was picked up again and continued to release raylib 1.0 and use it on some tools development.
+During August 2016, raygui was used to develop rFXGen and rGuiLayout tools and rGuiStyler was also updated an improved.
+
+## notes on raygui 1.0
+Officially, raygui 1.0 was published on June 2016, about one year and a half after initializing its development.
+
+## controls
+Currently raygui provides the following controls:
+ - Label
+ - Button
+ - ToggleButton
+ - ToggleGroup
+ - ComboBox
+ - CheckBox
+ - Slider
+ - SliderBar
+ - ProgressBar
+ - Spinner
+ - TextBox
+
+## acknowledgements
+The following people has invested their time and effort into raygui project. Big thanks to them!
+
+[Kevin Gato](@Gatonevermind) for working on initial development.
+Daniel Nicolas  for working on initial development.
+Sergio Martinez for improving raygui and working on [rGuiStyler](https://github.com/raysan5/raygui/tree/master/tools/rGuiStyler) tool.