Added README

README.md

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+# Russian roulette for your media
+
+## About
+
+Sometimes, you just need a way to randomly display files from one or more directories in your browser.
+
+This tool is here to help.
+
+Simply point the tool at one or more directories, and then open the specified port (default 8080) in your browser to show random files.
+
+A random file will be selected if you open the root URI directly (e.g. http://localhost:8080/), or if you click on any displayed image.
+
+Browser history is preserved, so you can always go back to any previously displayed image.
+
+Builds available [here](https://cdn.seedno.de/builds/roulette).
+
+## Usage output
+```
+Usage:
+  roulette <path1> [path2] ... [pathN] [flags]
+  roulette [command]
+
+Available Commands:
+  completion  Generate the autocompletion script for the specified shell
+  help        Help about any command
+  version     Print version
+
+Flags:
+  -h, --help        help for roulette
+  -p, --port int    port to listen on (default 8080)
+  -r, --recursive   recurse into subdirectories
+  -v, --verbose     log accessed files to stdout
+      --version     version for roulette
+
+Use "roulette [command] --help" for more information about a command.
+```