updated readme to reflect what is not supported

README.md

@@ -114,6 +114,14 @@ use path::to::schema;
 Please keep in mind that this is an experimental feature and causes more build-time overhead.
 <br>
 Higher RAM usage, longer compile times and excessive disk usage (especially on larger projects) are the consequences.
+<br>
+Also we currently do not support "partial" imports. The following is **NOT** supported:
+```rust
+use path::to::generic;
+
+#[aliases(GenericSchema = generic::Schema)]
+```
+Please use the full path instead or the `as` keyword to rename the imported schemas.
 
 ```toml
 utoipauto = { version = "0.2.0", feature = ["generic_full_path"] }