Use
Node Version Manager

Usage:
    nvm help                    Show this message
    nvm --version               Print out the latest released version of nvm
    nvm install [-s] <version>  Download and install a <version>, [-s] from source. Uses .nvmrc if available
    nvm uninstall <version>     Uninstall a version
    nvm use <version>           Modify PATH to use <version>. Uses .nvmrc if available
    nvm run <version> [<args>]  Run <version> with <args> as arguments. Uses .nvmrc if available for <version>
    nvm current                 Display currently activated version
    nvm ls                      List installed versions
    nvm ls <version>            List versions matching a given description
    nvm ls-remote               List remote versions available for install
    nvm deactivate              Undo effects of NVM on current shell
    nvm alias [<pattern>]       Show all aliases beginning with <pattern>
    nvm alias <name> <version>  Set an alias named <name> pointing to <version>
    nvm unalias <name>          Deletes the alias named <name>
    nvm copy-packages <version> Install global NPM packages contained in <version> to current version

Example:
    nvm install v0.10.24        Install a specific version number
    nvm use 0.10                Use the latest available 0.10.x release
    nvm run 0.10.24 myApp.js    Run myApp.js using node v0.10.24
    nvm alias default 0.10.24   Set default node version on a shell

Note:
    to remove, delete or uninstall nvm - just remove ~/.nvm, ~/.npm and ~/.bower folders for these tests, since people aren't likely to have it installed