doc: updated CHANGES to reflect new name generation mechanism

Author: satra

CHANGES

@@ -34,6 +34,9 @@ Next release
 * ENH: New FSL interfaces: fsl.PrepareFieldmap, fsl.TOPUP, fsl.ApplyTOPUP, fsl.Eddy
 * ENH: New workflows: nipype.workflows.dmri.fsl.epi.[fieldmap_correction&topup_correction]
 
+* ENH: Added simplified outputname generation for command line interfaces.
+* FIX: Cleaned up input and output spec metadata
+
 Release 0.8.0 (May 8, 2013)
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