Crystal installation process updated (#1343)
Crystal installation process updated (#1343)

Updated the shell commands as per Crystal documentation [https://crystal-lang.org/install/on_ubuntu/](https://crystal-lang.org/install/on_ubuntu/)
svpernova09/homestead,svpernova09/homestead,laravel/homestead,laravel/homestead,svpernova09/homestead,laravel/homestead