Add `The Dictionary Even Mightier` talk

This commit will add an updated talk: [The Dictionary Even Mightier](https://www.youtube.com/watch?v=66P5FMkWoVU) by Brandon Rhodes (Pycon 2017).

README.md

@@ -602,6 +602,7 @@ Write code on a whiteboard or paper, not a computer. Test with some sample input
         - [ ] [Table Doubling, Karp-Rabin (video)](https://www.youtube.com/watch?v=BRO7mVIFt08&index=9&list=PLUl4u3cNGP61Oq3tWYp6V_F-5jb5L2iHb)
         - [ ] [Open Addressing, Cryptographic Hashing (video)](https://www.youtube.com/watch?v=rvdJDijO2Ro&index=10&list=PLUl4u3cNGP61Oq3tWYp6V_F-5jb5L2iHb)
         - [ ] [PyCon 2010: The Mighty Dictionary (video)](https://www.youtube.com/watch?v=C4Kc8xzcA68)
+        - [ ] [Pycon 2-17: The Dictionary Even Mightier (video)](https://www.youtube.com/watch?v=66P5FMkWoVU)
         - [ ] [(Advanced) Randomization: Universal & Perfect Hashing (video)](https://www.youtube.com/watch?v=z0lJ2k0sl1g&list=PLUl4u3cNGP6317WaSNfmCvGym2ucw3oGp&index=11)
         - [ ] [(Advanced) Perfect hashing (video)](https://www.youtube.com/watch?v=N0COwN14gt0&list=PL2B4EEwhKD-NbwZ4ezj7gyc_3yNrojKM9&index=4)