Update src/lg2txt.py

src/lg2txt.py

@@ -52,7 +52,7 @@ def readtranslateFile(mapFile):
 def readMapFile(fileName):
     """Read in symbol and structure mappings from a file."""
     try:
-        fileReader = csv.reader(open(fileName))
+        fileReader = csv.reader(open(fileName, encoding='utf8'))
     except:
         sys.stderr.write("  !! IO Error (cannot open): " + fileName + "\n")
         return