Marked x for Big 4

Author: arieslx

README.md

@@ -243,7 +243,7 @@ Sometimes the classes are not in session so you have to wait a couple of months,
 - [x] [Whiteboarding](https://medium.com/@dpup/whiteboarding-4df873dbba2e#.hf6jn45g1)
 - [x] [Effective Whiteboarding during Programming Interviews](http://www.coderust.com/blog/2014/04/10/effective-whiteboarding-during-programming-interviews/)
 - [x] [Demystifying Tech Recruiting](https://www.youtube.com/watch?v=N233T0epWTs)
-- [ ] How to Get a Job at the Big 4:
+- [x] How to Get a Job at the Big 4:
     - [ ] [How to Get a Job at the Big 4 - Amazon, Facebook, Google & Microsoft (video)](https://www.youtube.com/watch?v=YJZCUhxNCv8)
 - [ ] Cracking The Coding Interview Set 1:
     - [ ] [Gayle L McDowell - Cracking The Coding Interview (video)](https://www.youtube.com/watch?v=rEJzOhC5ZtQ)