Basic CLI support, fixes issues #99 #63

* fixes issues #99 #63
* adds basic CLI support including -help, -version, -url, -maxstates, -depth, -browser.

    usage: java -jar crawljax-cli-VERSION.jar
        --browser <TYPE>       browser type: firefox, chrome, ie, htmlunit
        --depth <LEVEL>        crawl depth level
      -help                     print this message
        --maxstates <STATES>   max number of states to crawl
     -url <URL>                url to crawl
     -version                  print the version information and exit