Merge pull request #3380 from adelavega/pybids_extension

FIX: Extension not extensions, after pybids v0.9

Author: effigies

nipype/interfaces/io.py

@@ -2935,12 +2935,12 @@ def __init__(self, infields=None, **kwargs):
  "bold": {
  "datatype": "func",
  "suffix": "bold",
- "extensions": ["nii", ".nii.gz"],
+ "extension": ["nii", ".nii.gz"],
  },
  "T1w": {
  "datatype": "anat",
  "suffix": "T1w",
- "extensions": ["nii", ".nii.gz"],
+ "extension": ["nii", ".nii.gz"],
  },
  }