feat: First good README.md

README.md

@@ -1,2 +1,45 @@
 # PhanesEngine
-3D / 2D Game Engine.
+
+Yet another Game Engine written in C++.
+
+## Build
+
+For building the engine premake5 is required. Execute `premake5 gmake` to generate the Makefile.
+
+### PhanesCore
+
+The Core Runtime library is build with:
+
+    make PhanesCore
+
+## Status
+
+Phanes is and will be developed, though progress will be slow.
+
+### Currenty under development
+
+- PhanesCore
+  - <span style="color:green; font-weight:800">Math</span>
+
+## Testing
+
+Testing PhanesEngine happens via the gtest framework. To run the tests for PhanesEngine one needs to
+build the test applications (currently only MathTestFPU) as well as gtet.
+
+    make MathTestFPU
+
+They depend on the gtest library so the should not be required to build it manually. If for some reason this doesn't
+work gtest can be build via:
+
+    make gtest
+
+## Sample Project
+
+The repository contains a sample game project using PhanesEngine. It can be build by executing:
+
+    make DevPlayground
+
+## Copyright
+
+PhanesEngine was developed by Thorben Höhne and is licensed under the Apache License Version 2.0. See
+[LICENSE](LICENSE) for more information.