Minor bug fixes to translator

pycroscopy/io/translators/__init__.py

@@ -36,9 +36,11 @@ from .beps_data_generator import FakeBEPSGenerator
 from .labview_h5_patcher import LabViewH5Patcher
 from .nanonis import NanonisTranslator
 from .image import ImageTranslator
+from .pifm import PiFMTranslator
 
 __all__ = ['BEodfTranslator', 'BEPSndfTranslator', 'BEodfRelaxationTranslator',
            'GIVTranslator', 'GLineTranslator', 'GTuneTranslator', 'GDMTranslator', 'PtychographyTranslator',
            'SporcTranslator', 'MovieTranslator', 'IgorIBWTranslator',
            'OneViewTranslator', 'NDataTranslator', 'FakeBEPSGenerator',
-           'LabViewH5Patcher', 'TRKPFMTranslator', 'BrukerAFMTranslator', 'ImageTranslator']
+           'LabViewH5Patcher', 'TRKPFMTranslator', 'BrukerAFMTranslator', 'ImageTranslator',
+           'PiFMTranslator', 'NanonisTranslator']

pycroscopy/io/translators/pifm.py

@@ -3,6 +3,8 @@ import numpy as np
 from pyUSID.io.translator import Translator
 from pyUSID.io import write_utils
 from pyUSID import USIDataset
+import pyUSID as usid
+import h5py
 
 class PiFMTranslator(Translator):
     """