Update the readme examples to use arrow functions instead to the function keyword

Section/Content To Improve

Performing a GET request

const axios = require('axios');
// Make a request for a user with a given ID
axios.get('/user?ID=12345')
  .then(function (response) {
    // handle success
    console.log(response);
  })
  .catch(function (error) {
    // handle error
    console.log(error);
  })
  .then(function () {
    // always executed
  });

Suggested Improvement

Performing a GET request

const axios = require('axios');
// Make a request for a user with a given ID
axios.get('/user?ID=12345')
  .then(response => {
    // handle success
    console.log(response);
  })
  .catch(error => {
    // handle error
    console.log(error);
  })
  .then(()=> {
    // always executed
  });

Relevant File(s)

README.md

[carpben]

@sanketpathak64 we first need to provide a rational - why is this change better. Using the function notation, the function word stands out and helps readability.

[carpben]

We need to provide reasoning for this sort of change.

1. How wide is browser support?
2. Does ESlint have this rule as part of their recommended list?