Add README.md

Author: zhade

README.md

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+# zunbollox
+
+Tool to convert text encoded in windows code page 949 to utf-8 (but not vice-versa).
+
+The name is taken from the old tool "UnBollox" or "RO Unbolloxiser" by StelTechCor in the year 2004.
+Their tool converts filenames and directory trees whereas this tool just converts text.
+
+## Building
+
+Run `dub build` to build the command line program.  
+Run `dub build :gui` to build the GUI program.
+
+## Usage
+`./zunbollox -h`
+```
+zunbollox 1.0.0
+Usage: zunbollox [-h] [-f <filename>]
+
+If no options are provided the program will
+convert the file "unbollox_me.txt" to "clean.txt".
+
+Options:
+	-h		Print this help message.
+	-f <filename>	Convert specific file. The file must be ascii/latin1 encoded.
+```
+
+![GUI Screenshot](gui-screenshot.png?raw=true)
+
+## Windows
+
+On the release page you will find pre-compiled windows binaries for both the cli and the gui.