Update README

README.md

@@ -2,6 +2,33 @@
 CLI tool to interact with Kindle vocabulary builder
 
 Connect the Kindle to your USB port and run the binary.
+
+```
+$ chmod +x kindle-words
+$ ./kindle-words -h
+
+NAME:
+   kindle-words - Provides methods to work with vocabulary builder
+
+USAGE:
+   kindle-words [global options] command [command options] [arguments...]
+
+VERSION:
+   0.1.0
+
+COMMANDS:
+     export       Export words
+     delete-book  Delete book
+     delete-word  Delete word
+     books        show book title
+     help, h      Shows a list of commands or help for one command
+
+GLOBAL OPTIONS:
+   --verbose      Show more output
+   --help, -h     show help
+   --version, -v  print the version
+
+```
 **Important**: This has been only tested on Mac for the moment.
 
 **Note**: Your Kindle must be restarted to see the changes.

main.go

@@ -15,7 +15,7 @@ func main() {
   app.EnableBashCompletion = true
   app.Name = "kindle-words"
   app.Usage = "Provides methods to work with vocabulary builder "
-
+  app.Version = "0.1.0"
   // global level flags
   app.Flags = []cli.Flag{
     cli.BoolFlag{