fix help output style

lib/commands.js

@@ -1,10 +1,25 @@
 var _ = require('lodash');
 
+// Helper function for print help
+// indented output by spaces
+function indent_output(n, name, description) {
+    if (!n) {
+        n = 0;
+    }
+
+    console.log(
+        _.repeat('    ', n)
+        + name
+        + _.repeat(' ', 32 - n * 4 - name.length)
+        + description
+    );
+}
+
 // Print help for a list of commands
 // It prints the command and its description, then all the options
 function help(commands) {
     _.each(commands, function(command) {
-        console.log('    '+command.name, '\t', command.description);
+        indent_output(1, command.name, command.description);
         _.each(command.options || [], function(option) {
             var after = [];
 
@@ -14,7 +29,7 @@ function help(commands) {
             if (after.length > 0) after = "("+after.join("; ")+")";
             else after = "";
 
-            console.log('        --'+option.name, '\t', option.description, after);
+            indent_output(2, '--' + option.name, option.description + ' ' + after);
         });
         console.log('');
     });