Add an abbreviation to 'address' option

Author: Juhyung Park

README.md

@@ -11,7 +11,7 @@ A command line CodeChain key management tool
     -V, --version                     output the version number
     -t --account-type <account-type>  'platform' or 'asset'. The type of the key
     -p --passphrase <passphrase>      passphrase
-    --address <address>               address
+    -a --address <address>               address
     -h, --help                        output usage information
 
   Action:

src/index.ts

@@ -15,7 +15,7 @@ commander
     // FIXME: get passphrase interactively
     .option("-t --account-type <account-type>", "'platform' or 'asset'. The type of the key")
     .option("-p --passphrase <passphrase>", "passphrase")
-    .option("--address <address>", "address")
+    .option("-a --address <address>", "address")
     .action(main);
 
 commander.on("--help", () => {