Insert lines to address pep8 problems

lib/galaxy/datatypes/proteomics.py

@@ -134,6 +134,7 @@ class MzML(ProteomicsXml):
     blurb = 'mzML Mass Spectrometry data'
     root = "(mzML|indexedmzML)"
 
+
 class NmrML(ProteomicsXml):
     """nmrML data"""
     # No edam format number yet.
@@ -141,6 +142,7 @@ class NmrML(ProteomicsXml):
     blurb = 'nmrML NMR data'
     root = "nmrML"
 
+
 class ProtXML(ProteomicsXml):
     """protXML data"""
     file_ext = "protxml"