• Read this document entirely and estimate how long this assignment will take.
• Work in a fork of this repository
• Work in a branch on your fork
• Protect your repository's master branch by activating continuous-integration/travis-ci status checks
• Create a pull request from your lab + <your name> branch to your master branch
• Open a pull request to this repository
• Submit on canvas a question and observation,your original estimate, how long you spent, and a link to your pull request

Your lab directory must include

• README.md -- with a documentation about your lab
• .gitignore -- with a robust .gitignore
• .eslintrc -- with the class .eslintrc file
• .eslintignore -- with the class .eslintignore
• .package.json -- with all dependencies and dev-dependencies
• lib/ -- directory for holding your programs helper modules
• test/ -- directory for holding your programs unit and integration tests

• write at least three test assertions for each method of the Binary Tree Data Structure
• organize your tests into appropriate describe/test blocks for test output readability

• Implement an in-order traversal function that returns a string of the visited nodes.
  • For example : 6,8,7,9,2,1,4,3,5

• in your README, write documentation for you data structures
• your documentation should includes code block useage examples
• provide instructions for:
  • installing and using your data structure
  • accessing each method
  • running your tests

• Tests: 2pts
• Passes linter: 1pts
• Completed Data Structure: 5pts
• Big-O notation: 2pt