[Laravel5][Solved] This development build of composer is over 30 days old. It is recommended to update it by running

 Warning : This development build of composer is over 30 days old. It is recommended to update it by running " C:\Documents and Settings\All Users\Application Data\ComposerSetup\bin\composer.phar self-update" to get the latest version.

Use this command to update:

composer self-update

Reference:
http://stackoverflow.com/questions/19064731/how-to-run-composer-phar-self-update-in-travis