Feat: Logout route works, session is destroyed

[Brandon-Schefstad]

Closes #37

Updated /controllers/auth.js logout() Was:

exports.logout = (req, res) => {
  req.logout(() => {
    console.log('User has logged out.')
  })
  req.session.destroy((err) => {
    if (err) console.log('Error : Failed to destroy the session during logout.', err)
    req.user = null
    res.redirect('/')
  })
}

Now:

exports.logout = (req, res) => {
  req.session.destroy((err) => {
    console.log(req.user)
    res.redirect('/')
  })
}

[nrooney024]

closes #55