add naval_fate example
diff --git a/examples/naval_fate.go b/examples/naval_fate.go
new file mode 100644
index 0000000..4756d57
--- /dev/null
+++ b/examples/naval_fate.go
@@ -0,0 +1,28 @@
+package main
+
+import (
+ "fmt"
+ docopt "github.com/kbatten/docopt.go"
+)
+
+func main() {
+usage := `Naval Fate.
+
+Usage:
+ naval_fate.py ship new <name>...
+ naval_fate.py ship <name> move <x> <y> [--speed=<kn>]
+ naval_fate.py ship shoot <x> <y>
+ naval_fate.py mine (set|remove) <x> <y> [--moored|--drifting]
+ naval_fate.py -h | --help
+ naval_fate.py --version
+
+Options:
+ -h --help Show this screen.
+ --version Show version.
+ --speed=<kn> Speed in knots [default: 10].
+ --moored Moored (anchored) mine.
+ --drifting Drifting mine.`
+
+ arguments := docopt.ParseLoud(usage, nil, true, "Naval Fate 2.0", false)
+ fmt.Println(arguments)
+}
