add some better log messages

lib/index.js

@@ -21,26 +21,29 @@ module.exports.tend = function(dir, rawCommand, options) {
   var startCommand = function() {
     console.log(('Running Command: ' + rawCommand).green);
     executor = spawn(command, args);
+    var pid = executor.pid;
     executor.stdout.on('data', function(chunk) {
+      console.log(('Process ' + pid + ' stdout: ').yellow);
       console.log(chunk.toString());
     });
     executor.stderr.on('data', function(chunk) {
+      console.log(('Process ' + pid + ' stderr: ').yellow);
       console.error(chunk.toString().red);
     });
     executor.on('error', function(error) {
-      console.error('Error Running Command'.red);
+      console.error(('Error Running Process ' + pid).red);
     });
     executor.on('close', function(code, signal) {
       if (code === 0) {
-        console.log('Command Exited Successfully'.green);
+        console.log(('Process ' + pid + ' Exited Successfully').green);
       } else if (signal) {
-        console.warn(('Command Killed With Signal: ' + signal).yellow);
+        console.warn(('Process ' + pid + ' Killed With Signal: ' + signal).yellow);
       } else {
-        console.error(('Command Exited With Status: ' + code).red);
+        console.error(('Process ' + pid + ' Exited With Status: ' + code).red);
       }
       executor = null;
     });
-    console.log(('Process ' + executor.pid + ' Started').green);
+    console.log(('Process ' + pid + ' Started').green);
   }.bind(this);
 
   watch.watchTree(dir, function(f, curr, prev) {