Provide a way to initialize the api with localized data - as string

[cemozudem]

By this way api consumer may initialize api directly with string content read from any source

private Localizator(string localizedContent, string language)

Also:
Support key-value input(eg. properties file) for ease of translators
Support xml input.

[tolgacakir]

There are some issues about configuration style. It will be better than current style.

We will integrate .Net properties or resx file. It is an good opinion.

Besides, I think it would be advantageous to keep the library compact. For example I'm not so sure about xml.