Added remote templating engine using jinja2, see examples/playbook.yml for usage.

Cleanup is due in runner.py

library/command

@@ -4,17 +4,26 @@ try:
 	import json
 except ImportError:
 	import simplejson as json
+
 import subprocess
 import sys
 import datetime
+import traceback
 
 args = sys.argv[1:]
 startd = datetime.datetime.now()
 
-cmd = subprocess.Popen(args, shell=False, 
-    stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+try:
+    cmd = subprocess.Popen(args, shell=False, 
+        stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = cmd.communicate()
+except:
+    print json.dumps({
+        "failed" : 1,
+        "traceback" : traceback.format_exc()
+    })   
+    sys.exit(1)
 
-out, err = cmd.communicate()
 endd = datetime.datetime.now()
 delta = endd - startd