corrections and added user manual

corrected website link
added a user manual
AutoCAD files of the inner slider sledge

bad quality, i´ll do a better technical drawing of all machined parts
in the future
update to version 0.3

now, that the pysical part of the slider is ready, I updated some
values,
added the trigger,
corrected the slide direction
added the calulation section
new arduino sketch to test the setup without conversion

like version 0.2
update to 1.0.1 minor bugfixes - see new changelog

fixed two bugs
added changelog to the readme.md
little modification to 1.0.2
little chances to the readme
added hardware and elecronics readme