wip proxy commands to meteor cli

- problem killing child process on sigint
- also sometimes parent process quits without waiting for child process
- need to do more research

lib/em.js

@@ -7,6 +7,7 @@ var Command = require('./command.js');
 var Table = require('cli-table');
 var cli = require('cli-color');
 var Config = require('./config.js');
+var spawn = require('child_process').spawn;
 
 var requireAll = function (relpath) {
   var dirpath = path.join(__dirname, relpath);
@@ -42,10 +43,32 @@ em = new Command({
 
   }
 }, function (args, opts) {
-  var command = args[0];
-  if (!command)
-    throw new Command.UsageError;
-  this.runSubCommand(command, args.slice(1), opts);
+  var command = args[0] || 'run';
+
+  try {
+    this.runSubCommand(command, args.slice(1), opts);
+  } catch (e) {
+    if (e instanceof Command.UsageError) {
+      var appDir;
+      if (appDir = this.findAppDirectory()) {
+        var meteorArgs = process.argv.slice(3);
+
+        //XXX how to properly kill the child process on sigint?
+        //XXX why does the parent process exit, and then sometimes
+        //resume later?
+        var childProcess = spawn('meteor', meteorArgs, {
+          cwd: appDir,
+          env: process.env,
+          stdio: 'inherit',
+          killSignal: 'SIGTERM'
+        });
+      } else {
+        throw e;
+      }
+    } else {
+      throw e;
+    }
+  }
 });
 
 em.Command = Command;