Fixes import error in simplejson I mistakenly added

simplejson/encoder.py

@@ -13,7 +13,7 @@ def _import_speedups():
         return None, None
 c_encode_basestring_ascii, c_make_encoder = _import_speedups()
 
-from simplejson.decoder import PosInf
+from .decoder import PosInf
 
 #ESCAPE = re.compile(ur'[\x00-\x1f\\"\b\f\n\r\t\u2028\u2029]')
 # This is required because u() will mangle the string and ur'' isn't valid