Allow nipype.cfg in cwd to be read even if ~/.nipype does not exist

Fixes a bug where the nipype.cfg in the current directory would not
be read if the folder ~/.nipype does not exist.

Author: stilley2

nipype/utils/config.py

@@ -104,9 +104,8 @@ def __init__(self, *args, **kwargs):
         self._display = None
         self._resource_monitor = None
 
-        if os.path.exists(config_dir):
-            self._config.read(
-                [os.path.join(config_dir, 'nipype.cfg'), 'nipype.cfg'])
+        self._config.read(
+            [os.path.join(config_dir, 'nipype.cfg'), 'nipype.cfg'])
 
         for option in CONFIG_DEPRECATIONS:
             for section in ['execution', 'logging', 'monitoring']: