Prepare for npm publish

preparePackageForNPM.js

const path = require('path');
const fs = require('fs');

const file = path.join(__dirname, '../' + process.argv[2]);
const fileJSON = require(file);

delete fileJSON.dependencies;
delete fileJSON.eslintConfig;
delete fileJSON.devDependencies;
delete fileJSON.scripts;
delete fileJSON.postcss;
delete fileJSON.browserslist;

fileJSON.main = 'image-manager.js';

fs.writeFile(path.join(__dirname, `./../dist/package.json`), JSON.stringify(fileJSON, null, 4), err => {
    if(err) {
        return console.log(err);
    }
    console.log("package.json file was saved in dist!");
});