Merge pull request #11 from BFriedland/simple_graph

Simple graph
Storing work on traversable_graph
Cleaned directory
Flake8 suggestions
Merge pull request #12 from BFriedland/bst

Flake8 suggestions
Built out hash_table tests
Finalized hash_table.py
Updated readme for hash_table
Merge pull request #13 from BFriedland/hash_table

Hash table
Updated .yml for test_hash_table.py
Merge pull request #14 from BFriedland/hash_table

Updated .yml for test_hash_table.py
PEP-8 compliance.
Merge pull request #15 from BFriedland/hash_table

PEP-8 compliance, unnecessary comment removal.
Added docstrings, updated readme
Merge pull request #16 from BFriedland/hash_table

Added docstrings, updated readme
Finalized traversable_graph random testing
Prettified warning statement
Updated readme for traversable_graph
Merge pull request #17 from BFriedland/traversable_graph

Traversable graph
Testing how Travis works...