Upgrade Spyne from 2.10.10 to 2.11.0

This fixes uploading base64 encoded data to the JSON webservice. For
example:

    echo "NM_003002.2:c.274delT\nXXX:g.1del" | base64 > test.base64
    curl \
      -d 'process=SyntaxChecker' \
      -d 'argument=hg19' \
      --data-urlencode 'data@test.base64' \
      'http://127.0.0.1:8082/submitBatchJob'

requirements.txt

@@ -6,7 +6,7 @@ pyparsing==2.0.1
 pytz==2013.9
 requests==2.2.1
 simplejson==3.3.3
--e git+https://github.com/LUMC/spyne.git@spyne-2.10.10-mutalyzer#egg=spyne
+-e git+https://github.com/LUMC/spyne.git@spyne-2.11.0-mutalyzer#egg=spyne
 suds==0.4
 wsgiref==0.1.2
 xlrd==0.9.2