add README

README.md

+# libeismultiplexer
+
+libeismultiplexer is a shared library that allows you to control EISmulitplexer devices.
+
+For questions or comments, please write to klemm@rhd-instruments.de
+
+Full Online API documentation can be built with the "doc" target and is also avialable [here](http://uvos.xyz/kiss/libeismultiplexer).
+A PDF with API documentation can be found [here](http://uvos.xyz/kiss/libeismultiplexer.pdf).
+
+## Compile/Install
+
+### Requirements
+
+* git
+* c11 capable compiler (e.g. GCC, CLANG)
+* cmake 3.0 or later
+* libusb 1.0 or later
+* (optional) doxygen 1.8 or later to generate the documentation
+
+### Procedure
+
+In a console do:
+
+* git clone https://git-ce.rwth-aachen.de/carl_philipp.klemm/libeismultiplexer.git
+* cd librelaxisloader
+* mkdir build
+* cd build
+* cmake ..
+* make
+* sudo make install
+
+to make the documentation:
+
+* make doc
+
+### Licence
+
+librelaxisloader is licenced to you under the Apache License, Version 2.0