title: How to check if your project name is available on packagist.org
body: <p>I am trying to put up my first php project on packagist.org but my vendor name is already taken. I have already pushed a tagged release to github; now I have to modify my composer file without creating a new git tag which isn't as simple as just pushing your changes to github. My question is: how do I do a namespace check before naming the package? Same issue with the code name spacing too. How can I do a lookup to prevent a clash? </p>