Update README.md

README.md

@@ -12,8 +12,10 @@ To report an issue, use the [issues page](https://github.com/eez-open/eez-flow-t
 sudo apt-get update
 sudo apt-get install -y git libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev cmake build-essential libbsd-dev
 git clone https://github.com/eez-open/eez-flow-template-sdl
-mkdir -p eez-flow-template-sdl/build/linux
-cd eez-flow-template-sdl/build/linux
+cd eez-flow-template-sdl
+git submodule update --init --recursive
+mkdir -p build/linux
+cd build/linux
 cmake ../..
 make
 ```
@@ -30,6 +32,8 @@ Install [Visual Studio Community 2017](https://visualstudio.microsoft.com/downlo
 
 Use git to clone https://github.com/eez-open/eez-flow-template-sdl.
 
+Also, execute: `git submodule update --init --recursive` inside `eez-flow-template-sdl`.
+
 Execute `cmake.bat`.
 
 Visual Studio solution is created in `\path\to\eez-flow-template-sdl\build\win32`.