Add support for printing the project namespace

Author: kgryte

bin/cli

@@ -124,6 +124,7 @@ if ( cmd === 'help' ) {
 		cmd === 'datasets' ||
 		cmd === 'ls' ||
 		cmd === 'ls-tree' ||
+		cmd === 'ns' ||
 		cmd === 'repl'
 	) {
 		cmd = commands[ cmd ];

bin/commands.json

@@ -2,5 +2,6 @@
 	"datasets": "./lib/node_modules/@stdlib/datasets/bin/cli",
 	"ls": "./tools/pkgs/names/bin/cli",
 	"ls-tree": "./tools/pkgs/tree/bin/cli",
+	"ns": "./lib/node_modules/@stdlib/namespace/bin/cli",
 	"repl": "./lib/node_modules/@stdlib/repl/bin/cli"
 }

bin/usage.txt

@@ -10,6 +10,7 @@ Commands:
   help [command]               Print a help message.
   datasets                     Retrieve a dataset.
   ls                           List package names.
-  tree                         Show package tree.
+  ls-tree                      Show package tree.
+  ns                           Print namespace.
   repl                         Start a REPL.