Update the API tools principle from 'BYOK' to 'must-have essentials'

Author: robertpiosik

README.md

@@ -21,7 +21,7 @@
 **Guiding principles:**
 
 - initialize popular chatbots—don't scrape responses
-- API tools—BYOK (Bring Your Own Key)
+- API tools—must-have essentials
 - privacy first—zero telemetry
 - lightweight—about 1MB of code