Run the following command in your console to require the bundle.
composer require w-vision/wvision
And for the nightly build.
composer require w-vision/wvision:2.0.x-dev
To enable the bundle inside pimcore, there's a handy CLI command.
bin/console pimcore:bundle:enable WvisionBundle
Finally, the bundle can be installed with the following line.
bin/console pimcore:bundle:install WvisionBundle
Et voilà, you're done!