Merge pull request #169 from mindsdb/update-license

Update __about__.py

Author: ZoranPandovski

mindsdb_sdk/__about__.py

@@ -6,5 +6,5 @@
 __author__ = 'MindsDB Inc'
 __github__ = 'https://github.com/mindsdb/mindsdb_python_sdk'
 __pypi__ = 'https://pypi.org/project/mindsdb-sdk/'
-__license__ = 'GPL-3.0'
+__license__ = 'MIT'
 __copyright__ = 'Copyright 2020- mindsdb'