updated Readme

README.md

-# deconvolution_documentation
+# Deconvolution documentation
+
+This repository contains documentaion regarding deconvolution using Huygens from various sources. 
+
+### If bead images are available
+-
+Click [here](https://git.mpi-cbg.de/scicomp/bioimage_team/deconvolution_documentation/blob/master/from_SCF/Deconvolution_with_Huygens_using_beads.pdf).
+
+### For deconvolution using theoretical PSF computation
+-
+Click [here](https://git.mpi-cbg.de/scicomp/bioimage_team/deconvolution_documentation/blob/master/from_SCF/Deconvolution_with_Huygens_using_theoreticalPSF.pdf).