Article downloader basic implementation
Online articles building improvement. Now it can download all articles from WEB. There are some issues in case of HTTP 500.
Bug fixes: parsing errors, reconnections in case of HTTP 500.
Multiple files reader.
Command line support
Multiple files reader.
Merge branch 'online-downloader' of https://github.com/astavonin/MemCardsBuilder into online-downloader

Conflicts:
	src/main/scala/me/sysdev/App.scala
Merge branch 'online-downloader' of https://github.com/astavonin/MemCardsBuilder into online-downloader

Conflicts:
	src/main/scala/me/sysdev/App.scala