Added add method
isExists does not work properly
implemented find, not sure if works will run exists with find
Exists does not work, worked on more ways to do it
key 1 works, -1 doesn't.
-1 now exists, was using wrong direction of tree branches.
Adding and checking if it exists now works!
Min and Max implemented but untested.
working on prev and next
Finished readme, tried to implement next and prev
Merge pull request #12 from Vutisat/vutisat

Turning in homework