Update README.md

Removed link to the deprecated owlink website as it's no longer associated with this project.

CITATION.cff

@@ -0,0 +1,31 @@
+# This CITATION.cff file was generated with cffinit.
+# Visit https://bit.ly/cffinit to generate yours today!
+
+cff-version: 1.2.0
+title: 'OpenDrop: an Open Source AirDrop Implementation'
+message: 'If you use this software, please cite it as below.'
+type: software
+authors:
+  - given-names: Alexander
+    family-names: Heinrich
+    affiliation: 'SEEMOO, TU Darmstadt'
+    orcid: 'https://orcid.org/0000-0002-1150-1922'
+  - given-names: Milan
+    family-names: Stute
+    affiliation: 'SEEMOO, TU Darmstadt'
+    orcid: 'https://orcid.org/0000-0003-4921-8476'
+  - given-names: Matthias
+    family-names: Hollick
+    affiliation: 'SEEMOO, TU Darmstadt'
+    orcid: 'https://orcid.org/0000-0002-9163-5989'
+repository-code: 'https://github.com/seemoo-lab/opendrop'
+abstract: >-
+  OpenDrop is a command-line tool that allows sharing files
+  between devices directly over Wi-Fi. Its unique feature is
+  that it is protocol-compatible with Apple AirDrop which
+  allows to share files with Apple devices running iOS and
+  macOS.
+license: GPL-3.0
+commit: cbc7ca46a75bb2da4af9d406732ddf2192578388
+version: '0.13'
+date-released: '2021-04-29'

README.md

@@ -9,7 +9,7 @@ We support contacts-only devices by using extracted AirDrop credentials (keys an
 
 ## Disclaimer
 
-OpenDrop is experimental software and is the result of reverse engineering efforts by the [Open Wireless Link](https://owlink.org) project.
+OpenDrop is experimental software and is the result of reverse engineering efforts by the [Open Wireless Link](<<DISCLAIMER: The former owlink website is no longer associated with this project, please disregard it.>>) project.
 Therefore, it does not support all features of AirDrop or might be incompatible with future AirDrop versions.
 OpenDrop is not affiliated with or endorsed by Apple Inc. Use this code at your own risk.
 
@@ -77,7 +77,7 @@ OpenDrop will try to interpret the input in the order (1) `index`, (2) `ID`, and
 (Note that OpenDrop _receivers_ still only support receiving regular files.)
 
 ```
-$ opendrop send -r 0 -f https://owlink.org --url
+$ opendrop send -r 0 -f <<DISCLAIMER: The former owlink website is no longer associated with this project, please disregard it.>> --url
 ```
 
 ### Receiving Files

setup.py

@@ -14,7 +14,7 @@ setup(
     description="An open Apple AirDrop implementation",
     long_description=long_description,
     long_description_content_type="text/markdown",
-    url="https://owlink.org",
+    url="<<DISCLAIMER: The former owlink website is no longer associated with this project, please disregard it.>>",
     project_urls={
         "Source": "https://github.com/seemoo-lab/opendrop",
         "Research Paper": "https://usenix.org/conference/usenixsecurity19/presentation/stute",