Update README.md

README.md

@@ -9,6 +9,7 @@ A comprehensive collection of open source C++ examples for [Vulkan®](https://ww
 + [Cloning](#Cloning)
 + [Assets](#Assets)
 + [Building](#Building)
++ [Running](#Running)
 + [Shaders](#Shaders)
 + [Examples](#Examples)
     + [Basics](#Basics)
@@ -63,6 +64,28 @@ The repository contains everything required to compile and build the examples on
 
 See [BUILD.md](BUILD.md) for details on how to build for the different platforms.
 
+## Running
+
+Once built, examples can be run from the bin directory. The list of available command line options can be brought up with `--help`:
+```
+ -v, --validation: Enable validation layers
+ -br, --benchruntime: Set duration time for benchmark mode in seconds
+ -vs, --vsync: Enable V-Sync
+ -w, --width: Set window width
+ -f, --fullscreen: Start in fullscreen mode
+ --help: Show help
+ -h, --height: Set window height
+ -bt, --benchframetimes: Save frame times to benchmark results file
+ -s, --shaders: Select shader type to use (glsl or hlsl)
+ -b, --benchmark: Run example in benchmark mode
+ -g, --gpu: Select GPU to run on
+ -bf, --benchfilename: Set file name for benchmark results
+ -gl, --listgpus: Display a list of available Vulkan devices
+ -bw, --benchwarmup: Set warmup time for benchmark mode in seconds
+```
+
+Note that some examples require specific device features, and if you are on a multi-gpu system you might need to use the `-gl` and `-g` to select a gpu that supports them.
+
 ## Shaders
 
 Vulkan consumes shaders in an intermediate representation called SPIR-V. This makes it possible to use different shader languages by compiling them to that bytecode format. The primary shader language used here is [GLSL](data/shaders/glsl) but thanks to an external contribution you'll also find [HLSL](data/shaders/hlsl) shader sources.