Create README.md

README.md

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+## ImGui + FontAwesome Example
+
+- Icon header provided by [IconFontCppHeaders](https://github.com/juliettef/IconFontCppHeaders)
+- Font binary generated using ImGui [binary_to_compressed_c](https://github.com/ocornut/imgui/blob/master/misc/fonts/binary_to_compressed_c.cpp "binary_to_compressed_c.cpp")
+- Built using ImGui DirectX11 Example
+
+### How to Update Font Files
+1. Download from webfonts [FontAwesome .tff file](https://github.com/FortAwesome/Font-Awesome/"webfonts") 
+2. Download (or generate) updated headers from [IconFontCppHeaders](https://github.com/juliettef/IconFontCppHeaders)
+3. Convert .tff file to byte array
+4. Replace template example files
+
+### How to convert .tff to header file
+1. Download [binary_to_compressed_c](https://github.com/ocornut/imgui/blob/master/misc/fonts/binary_to_compressed_c.cpp "binary_to_compressed_c.cpp") and compile following file comments (or use precompiled version from release)
+2. Run generated executable *with fonts in same folder that executable* using following parameters: ```binary_to_compressed_c.exe fa-solid-900.ttf FontAwesome > fa.h```
+3. Finished
+
+#### Performance Implications:
+I had some issues with performance degradation when using custom icons in a extreme low-end hardware (in a application with a HUGE iterations per second)
+
+#### See more detaills about implementation in main.cpp