I am trying to get test-first-ruby-master as instructed but I am getting multiple errors.

This is the structure of the files/directory in test-first-ruby-master

Gemfile     Gemfile.lock    README.md   lib     spec

lib contains ruby files and spec contains spec files. I am trying to execute 00_hello_spec.rb file on my terminal but it doesn't work.

What I have tried

1. require "lib/00_hello.rb"
2. require_relative "lib/00_hello.rb"

Errors I get

supritkumars-MacBook-Pro:test-first-ruby-master supritkumarshah$ rspec spec/00_hello_spec.rb 
/Users/supritkumarshah/Desktop/test-first-ruby-master/spec/00_hello_spec.rb:103:in `require': cannot load such file -- lib/00_hello.rb (LoadError)
    from /Users/supritkumarshah/Desktop/test-first-ruby-master/spec/00_hello_spec.rb:103:in `<top (required)>'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1226:in `load'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1226:in `block in load_spec_files'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1224:in `each'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/configuration.rb:1224:in `load_spec_files'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:97:in `setup'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:85:in `run'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:70:in `run'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/lib/rspec/core/runner.rb:38:in `invoke'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/gems/rspec-core-3.2.3/exe/rspec:4:in `<top (required)>'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/bin/rspec:23:in `load'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/bin/rspec:23:in `<main>'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `eval'
    from /Users/supritkumarshah/.rvm/gems/ruby-2.3.0/bin/ruby_executable_hooks:15:in `<main>'

Thank you