Add deprecation note about unsupported Python3 versions (#65)

Author: ulgens

README.md

@@ -6,13 +6,12 @@ You can sign up for an iyzico account at https://iyzico.com
 
 # Requirements
 
-~~Python 2.7 (will be deprecated in 2020)~~ (_Deprecated_)
-
 Python 3.6+
 
-### Note
+### Deprecation Notes
 
-~~Python 2.7~~ will not be maintained past 2020. As we iyzico, we will not support of that python version at March of 2020. If you have any questions, please open an issue on Github or contact us at [email protected].
+- Python 2.7 will not be maintained past 2020. As we iyzico, we will not support of that python version at March of 2020. If you have any questions, please open an issue on Github or contact us at [email protected].
+- Python 3.2, 3.3, 3.4 and 3.5 supports are dropped after v1.0.37.
 
 # Installation