show cool messages after installation (proudly fixes #25)

[kmaehashi]

Installer now displays a kind of cool messages after installation. (fixes #25)

$ ./install.sh -p /tmp/installer-tmp

When installation succeed:

//=============================================================//
//                                                             //
//   _________         ___                                     //
//   \____   _|       | /             ___I_I___                //
//       |  |         | |             \__^ ^__/        ____    //
//       |  |         | | ___    ___  __ | |          / __/    //
//       |  | |-|  |-|| |/   \  /   \| | | | |^|  |^|| (__     //
//       |  | | |  | ||    ^  ||  ^    | | | | |  | | \__ \    //
//       |  | | \_/  ||    O  ||  O    | | |_| \_/  | ___) |   //
//       |  |  \__/|_||_|\___/  \___/|_| |__/ \__/|_| \___/    //
//       | /                                                   //
//      / /                                                    //
//     |/                                                      //
//                                                             //
//=============================================================//
              Jubatus 0.9.2 Installation Completed!

  Add the following lines to your ~/.bashrc or ~/.zshrc:

    # Jubatus
    source /tmp/installer-tmp/share/jubatus/jubatus.profile

  Tutorials and examples can be found at:

    * http://jubat.us/en/tutorial.html
    * https://github.com/jubatus/jubatus-example/

  Have fun!  -- Jubatus Team

When installation failed:

*************************************************************
Jubatus installation failed...
If the problem persists, try cleaning up /tmp/installer-tmp directory.
all messages above are saved in "install.20160713.1806.log"

[rimms]

Cool! 👍