Update README.md

Update JWalker to 1.1.0

Fix Manhattan heuristic for N-Puzzle

Add README.md

Add license header to each file

Add Maven Wrapper

Update NPuzzleHeuristics and add tests for npuzzle

Package modules in an uber-jar with maven-shade-plugin

Refactor utility classes

Add maze example

Update N-Puzzle example

Change groupId to io.github.epieffe and update JWalker to 1.0.1

Add N-Queens example

Add parent pom and N-Puzzle example

Initial commit