Bug fix: missing attribute in set of allowed attributes (fixes #271) (#272)

* bug fix: missing element

* bug fix: bad attribute name

Author: ChrisTimperley

src/roswire/proxy/launch/__init__.py

@@ -249,7 +249,7 @@ def _load_remap_tag(self,
         return ctx, cfg
 
     @tag('node', ['name', 'type', 'pkg', 'required', 'clear_params',
-                  'respawn', 'namespace', 'output'])
+                  'respawn', 'namespace', 'output', 'args'])
     def _load_node_tag(self,
                        ctx: LaunchContext,
                        cfg: ROSConfig,
@@ -265,7 +265,7 @@ def _load_node_tag(self,
         required = self._read_optional_bool(tag, 'required', ctx, False)
         respawn = self._read_optional_bool(tag, 'respawn', ctx, False)
         respawn_delay = \
-            self._read_optional_float(tag, 'respawn', ctx, 0.0)
+            self._read_optional_float(tag, 'respawn_delay', ctx, 0.0)
 
         # create context
         ns = self._read_namespace(ctx, tag)