Update Readme.md

Author: Schwarz Lab

Readme.md

@@ -17,6 +17,8 @@ DeepLabStreams core feature is the real-time analysis using any type of camera-b
 ![DLS_Stim](docs/DLSSTim_example.gif)
 
 ### Quick Reference:
+
+ ### Read the preprint: [Schweihoff et al, 2019](https://doi.org/10.1101/2019.12.20.884478).
 
  ### 1. [Installation & Testing](https://github.com/SchwarzNeuroconLab/DeepLabStream/wiki/Installation)
 
@@ -89,7 +91,7 @@ If you encounter any issues or errors, you can check out the wiki article ([Help
 If you use this code or data please cite [Schweihoff et al, 2019](https://doi.org/10.1101/2019.12.20.884478).
 
 ## License
-This project is licensed under the GNU Lesser General Public License v3.0. Note that the software is provided "as is", without warranty of any kind, express or implied. 
+This project is licensed under the GNU Lesser General Public License v3.0. Note that the software is provided "as is", without warranty of any kind, expressed or implied. 
 ## Authors
 Lead Researcher: Jens Schweihoff, [email protected]