updated readme and test windows/runtime

README.md

@@ -16,14 +16,28 @@ build/shapes
 build/splat
 ```
 
+```
 clang++ -std=c++17 -L./osx/lib/ -lSDL2 -lSDL2_ttf -lSDL2_image -lfreetype -lpng -lwebp -ltiff -ljpeg -lbz2 -lz -I./osx/include/ -I./osx/include/SDL2/ -I./include ./SDL_FontCache.o src/context.cpp src/app.cpp examples/splat.cpp -framework OpenGL
+```
 
 We need to build font cache
 
+```
 clang -c -I./osx/include/ -I./osx/include/SDL2/  -I./include src/SDL_FontCache.c
+```
 
 # Windows
 
+```
 cl /EHsc /Iwindows/include /Iinclude /Iwindows/include/SDL2 /c .\src\app.cpp .\src\context.cpp .\examples\shapes.cpp .\src\SDL_FontCache.c
+```
 
+```
 link /SUBSYSTEM:CONSOLE /LIBPATH:windows\lib\x64 shapes.obj .\context.obj .\app.obj .\SDL_FontCache.obj SDL2.lib SDL2main.lib /NODEFAULTLIB:libcmtd.lib opengl32.lib shell32.lib SDL2_ttf.lib SDL2_image.lib freetype.lib
+```
+
+You can input the Visual Studio command line in Powershell with the command:
+
+```
+Import-BatchEnvironment 'C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat'
+```
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