Edit README.md

README.md

@@ -35,8 +35,9 @@ Origine : Images provenant des hôpitaux de Téhéran
 ## Authors and acknowledgment
 Show your appreciation to those who have contributed to the project.
 
-## License
-For open source projects, say how it is licensed.
+## literrature
+
+http://neuralnetworksanddeeplearning.com/chap1.html 
 
 ## Project status
 If you have run out of energy or time for your project, put a note at the top of the README saying that development has slowed down or stopped completely. Someone may choose to fork your project or volunteer to step in as a maintainer or owner, allowing your project to keep going. You can also make an explicit request for maintainers.