added git actions with provided test and also made micro change to test.js file

[Dnkfff]

Should we start translating this one to typescript?

[Dnkfff]

and also updated README.md file with additional syntax usage of imports in new EcmaScript patch from

murmurhash = require('murmurhash');

to

const murmurhash = require('murmurhash');

or

import murmurhash from 'murmurhash';