Change README to markdown format.

Add translation status overview.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

README

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-kbookreader - eBook reader for TDE.
-
-
-KBookReader is a TDE twin-panel text files viewer specialized in reading
-e-books.It supports multiple bookmarks, custom fonts, encoding selection.

README.md

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+
+kbookreader - eBook reader for TDE.
+
+
+KBookReader is a TDE twin-panel text files viewer specialized in reading
+e-books.It supports multiple bookmarks, custom fonts, encoding selection.
+
+.
+
+Contributing
+--------------
+
+If you wish to contribute to basket, you might do so:
+
+- TDE Gitea Workspace (TGW) collaboration tool.
+  https://mirror.git.trinitydesktop.org/gitea
+
+- TDE Weblate Translation Workspace (TWTW) collaboration tool.
+  https://mirror.git.trinitydesktop.org/weblate
+
+
+Translations status
+---------------------
+
+### messages
+[![Translations status](https://mirror.git.trinitydesktop.org/weblate/widgets/applications/-/kbookreader/multi-auto.svg
+"Engage in translating")](https://mirror.git.trinitydesktop.org/weblate/projects/applications/kbookreader/)
+
+### desktop files
+[![Translations status](https://mirror.git.trinitydesktop.org/weblate/widgets/applications/-/kbookreader-kbookreaderdesktop/multi-auto.svg
+"Engage in translating")](https://mirror.git.trinitydesktop.org/weblate/projects/applications/kbookreader-kbookreaderdesktop/)