Added docs

docs/General/building.rst

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+How to build
+==================
+Building Nuake is currently the only supported way to get Nuake.
+This means that you will need to build the projects file, build, then launch the project.
+
+The following step should help you get Nuake running on your computer:
+   #. Clone the git repo and the submodules recursivly. 
+      This can be done using the following command::
+
+      git clone --recurse-submodules https://github.com/antopilo/Nuake.git
+
+   #. Launch the cmd file called `generate.bat`.
+      This should generate a visual studio solution for you.
+
+   #. Build the project, everything should build in the right order and launch the editor.

docs/General/contribution.rst

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+How do I contribute?
+============
+You can simply fork the current github `repository <https://github.com/antopilo/Nuake>`_ and create pull requests, 
+I will look over them personally.

docs/General/index.rst

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+About
+=====
+
+.. toctree::
+    :maxdepth: 1
+    :name: toc-tutorial
+
+    introduction
+    building
+    contribution
+
+
+
+
+
+

docs/General/introduction.rst

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+.. note:: Nuake is a work-in-progress project and is not suited for profesionnal game development.
+         Use at your own risk.
+
+Welcome to the offical documentation of Nuake, an open-source 3D game engine!
+Nuake is a 3D game engine aimed to create games similar to quake with modern technologies.
+The recent resurgence of quake-like games gave me the initial ideas to create an engine designed
+to make those types of games. This means that integration of tools like trenchbroom and quake-based tools
+will be a priority during the development of Nuake.
+
+
+
+What is Nuake?
+============
+Nuake is a work-in-progress game engine aimed to give a simple but flexible tool to create quake-type games. 
+
+
+What type of game is it for?
+============
+You can create any type of game using Nuake, but it is mostly designed to create 3D games.
+You should be able to create FPS or TPS games without problems, although it was originally designed to create first person games.