Change key of data_dict from 'type' to 'source_type'
Add additional name argument when creating new harvest source
Made print method more robust against KeyErrors

This is especially needed if you create a new harvest source which does not have all the optional arguments. Before this lead to a KeyError after the creation of the source. Now this simply output 'None'.
Added new 'name' parameter to README
[#56] Fix syntax error and wrong type
[#56] Increase max params number
[#56] Update parameters on source create command

Add missing title and owner_org fields, remove deprecated user_id and
publisher_id
[#59] Ignore auth when using site_user