External or built-in tool for autoupdateing of software.

Updater.jar then executed :

1. read from config.json "version" and "server" fields
2. then it download newconfig.json from using url provided in "server" field.
3. it check equality of "version" fields and if there exist difference, further update proccess will be started.
4. it will download files frm urls provided in urls.
5. (optional) zip archives can be extracted
6. (optional) md5 checksum can be compared for integrity checking.

"version" = version number, build date, or any other integer value

"server" = url with newconfig.json correspond to server for updates, must contain encoded url

using tool like http://meyerweb.com/eric/tools/dencoder/ or something like that.

"md5" = md5 checksum or string "off" if no md5 checking needed.

"updaterUpdated" = if updater need to be updated itself, this flag must be set to true otherwise to false

"urls" = array of urls that need to be downloaded, every url need to be encoded, base correct syntax is :

"urls":["http%3A%2F%2Fexample%2Fupdate.zip","http%3A%2F%2Fexample%2Fupdate.zip","http%3A%2F%2Fexample%2Fupdate.zip"]

virtualy it dont have limit on how many files can be listed here.

#TODO Simple GUI

Make it work with simple url without need them to be encoded

Working start of external programm