fix tests new interface. Update CHANGES

Author: oesteban

CHANGES

@@ -1,6 +1,7 @@
 Next release
 ============
 
+* ENH: New interfaces for MRTrix3 (https://github.com/nipy/nipype/pull/1126)
 * FIX: Enable absolute path definitions in DCMStack (https://github.com/nipy/nipype/pull/1089,
        replaced by https://github.com/nipy/nipype/pull/1093)
 * ENH: New mesh.MeshWarpMaths to operate on surface-defined warpings

nipype/interfaces/mrtrix3/__init__.py

@@ -3,5 +3,5 @@
 # -*- coding: utf-8 -*-
 
 from utils import Mesh2PVE
-from preprocess import ResponseSD
+from preprocess import ResponseSD, ACTPrepareFSL
 from tracking import Tractography

nipype/interfaces/mrtrix3/preprocess.py

@@ -145,11 +145,11 @@ class ACTPrepareFSL(CommandLine):
     -------
 
     >>> import nipype.interfaces.mrtrix3 as mrt
-    >>> resp = mrt.ACTPrepareFSL()
-    >>> resp.inputs.in_file = 'T1.nii.gz'
-    >>> resp.cmdline                               # doctest: +ELLIPSIS
+    >>> prep = mrt.ACTPrepareFSL()
+    >>> prep.inputs.in_file = 'T1.nii.gz'
+    >>> prep.cmdline                               # doctest: +ELLIPSIS
     'act_anat_prepare_fsl T1.nii.gz act_5tt.mif'
-    >>> resp.run()                                 # doctest: +SKIP
+    >>> prep.run()                                 # doctest: +SKIP
     """
 
     _cmd = 'act_anat_prepare_fsl'