title: Update composer dependencies from command line
body: <p>I am currently working with symfony2 and I want to launch to download the libraries I need. I know the command in linux is <i>"$ ./composer.phar update --dev"</i> however when I run this in windows it prompts whether I should open the file with the windows explorer or not. I currently have composer.phar installed on windows but I am having trouble launching it. How would I be able to update my symfony2 folder with the dependencies I need. Thank you. </p>