Merge pull request #659 from tommyh/patch-1

Adding a warning to README about encryption/DRM

README.md

@@ -9,6 +9,12 @@
 
 [![udemy-dl-v1-1.png](https://i.postimg.cc/X7QpzY8q/udemy-dl-v1-1.png)](https://postimg.cc/zVHzL54Y)
 
+### Warning
+
+**Udemy has started to encrypt many of the course videos, so downloading them may be impossible/illegal because it involves decrypting DRM'd videos which opens up the author to DMCA takedowns/lawsuits.  If you use udemy-dl and some/all videos are skipped, please don't open a new issue or comment that the issue still exists.  All requests to bypass DRM/encryption will be ignored.**
+
+If you'd like to see the full context, then read (issue 627)[https://github.com/r0oth3x49/udemy-dl/issues/627].
+
 
 ### ***Important Note***:
  - Don't share your credentials until the issue is properly tagged/labeled with **account-needed**.