Correct scrypt_params missing in SigningKey call

[zicmama]

File "create_and_publish_identity.py", line 42, in get_identity_document
key = SigningKey(salt, password)
TypeError: init() missing 1 required positional argument: 'scrypt_params'

[coveralls]

Coverage remained the same at 86.025% when pulling cc7f09a on zicmama:patch-1 into 1289d74 on duniter:master.

[vtexier]

First, I don't have the problem. So can you tell us the version of python you are using and how you installed the api, on which platform ?

We must keep the examples as simple as possible.

I think that if a the fix is needed, it should be done in duniter-python-api/duniterpy/key/signing_key.py :

This code :

class SigningKey(libnacl.sign.Signer):
    def __init__(self, salt, password, scrypt_params=ScryptParams(4096,16,1)):

should be :

class SigningKey(libnacl.sign.Signer):
    def __init__(self, salt, password, scrypt_params=None):
        if scrypt_params=None:
            scrypt_params=ScryptParams(4096,16,1)

[M5oul]

Thanks for your contribution.
I also don't get this error.