Update README.md

I've changed the parameter order in the examples:

>>> from sasctl import Session, register_model
>>> from sklearn import linear_model as lm

>>> with Session('example.com', authinfo=<authinfo file>):
...    model = lm.LogisticRegression()
...    register_model('Sklearn Model', model, 'My Project')

When running it, I received errors. It seems like the order of the parameters for the register_model function is not correct. 
Running the code:
register_model('Sklearn Model', model, 'My Project')
Gives an error. 

Running the following code:
register_model(model, 'Sklearn Model', 'My Project')
Executes successfully. 

Based on the function definition in tasks.py, the order is the following:
def register_model(model, name, project, repository=None, input=None, version=None, files=None, force=False)

Let me know if I missed something.

Author: xavierBizoux

README.md

@@ -81,7 +81,7 @@ which can handle all necessary communication with the SAS Viya server:
 
 >>> with Session('example.com', authinfo=<authinfo file>):
 ...    model = lm.LogisticRegression()
-...    register_model('Sklearn Model', model, 'My Project')
+...    register_model(model, 'Sklearn Model', 'My Project')
 ```
 
 
@@ -165,7 +165,7 @@ Register a pure Python model in Model Manager:
 
 >>> with Session(host, authinfo=<authinfo file>):
 ...    model = lm.LogisticRegression()
-...    register_model('Sklearn Model', model, 'My Project')
+...    register_model(model, 'Sklearn Model', 'My Project')
 ```
 
 Register a CAS model in Model Manager: