add sample prompts disclaimer

sample_prompts/readme.txt

@@ -0,0 +1,11 @@
+Disclaimer – Use at Your Own Risk:
+
+This repository contains user prompts collected from a variety of sources related to image generation.
+Although we have made efforts to screen for content that may be deemed Not Suitable for Work (NSFW),
+we make no representations that the user prompts in the database or the generated content are not inaccurate,
+offensive, indecent or objectionable.
+
+This repository may not be suitable for anyone under 18 years of age and may possibly generate NSFW content.
+Please do not use this repository if you are under 18.
+
+We disclaim any and all liability for any content, including NSFW content.