Added node deletion method and tests for 3 conditions. All tests passes
Added tests for hash table
Merge pull request #15 from im-auld/hash_test

Hash test
Merge branch 'master' of https://github.com/im-auld/data_structures into hashtable
Added hashtable data structure.
Cleaning up branch.
Modfied hashtable get function. Updated readme.
Merge pull request #16 from im-auld/hashtable

Hashtable
Created a binary search tree with a balancing functionality. Uses the AVL algorithm to implement tree balancing. We also wrote test that checks the algorithm. We create(by insert) general unbalanced tree, a left only balanced tree and a right only balanced tree. We test if resulting tree is balanced. We use pre_order tranversing method.
Created insertion_sort.py file and its test. Perform insertion sort alorigthm on unsorted list.
Created a merge sort algorithm with test.
Deletes .test_merge_sort.swp
Modified merge_sort function.
Merge pull request #9 from eyueld-codefellow/merge_sort

Merge sort