add readme

README.md

+# autobiblatex
+
+autobiblatex is a commandline application that allows one to quickly generate a biblatex database given only a folder of pdf files.
+autobiblatex uses crossref where possible and a heuristic based on the metadata where it is not.
+
+autobiblatex's development and target platform is UNIX, but it should compile on nigh any platform
+
+## Compile/Install
+
+### Requirements
+
+* git
+* c++20 capable compiler (GCC, CLANG)
+* [cmake](https://cmake.org/) 3.20 or later
+* [pkg-config](https://www.freedesktop.org/wiki/Software/pkg-config/) (or change/hardcode the paths in CMakeLists.txt)
+* [libpoppler](https://poppler.freedesktop.org)
+* [curl](https://curl.se/)
+
+### Procedure (UNIX)
+
+In a console do:
+
+* git clone https://git-ce.rwth-aachen.de/carl_philipp.klemm/eisgenerator.git
+* cd eisgenerator
+* mkdir build
+* cd build
+* cmake ..
+* make -j8
+* sudo make install
+
+## Usage of autobiblatex
+
+### Generate spectra
+
+autobiblatex [FOLDER] [FILENAME]
+
+with FOLDER being a folder containing *.pdf files and FILENAME being a output file name where to place the biblatex database
+
+## Licence
+
+autobiblatex is Licenced to you under the GPLv3. See gpl-3.0.txt for more information