fix(install_selenium_standalone): standalone selenium server installation scripts to work on Microsoft Windows
             
Note, it's duplicated with PR.#290(fix(install_selenium_standalone): update generated script to work on Windows) partially.              
Standalone selenium server installation/start script doesn't work on Microsoft Windows. I changed...
 - add install_selenium_standalone script for Microsoft Windows
 - fix start script to work on Microsoft Windows
 - fix them to work from any place(directory) on Microsoft Windows. It's convenient for Windows users, he/she can run those scripts with just a click.