README.md in esse-0.0.2 vs README.md in esse-0.0.3

- old
+ new

@@ -1,6 +1,8 @@
 # esse
 
+**This project is under development and may suffer constant structural changes. I don't recommend using it right now**
+
 Simple and efficient way to organize queries/mapping/indices/tasks based on the official elasticsearch-ruby.
 
 ## Why to use it?
 Some facts to use this library:
 