Update CHANGELOG.md

CHANGELOG.md

@@ -4,10 +4,6 @@ Change log
 0.9.1 (2017-04-20)
 -------------------
 
-### Important Note
-
- - Please, before updating your Ambar to this version, update your `ambar.py` script by running `wget -O ambar.py https://static.ambar.cloud/ambar.py && chmod +x ./ambar.py`
-
 ### New features
  
  - Introducing **Search as You Type**
@@ -24,6 +20,10 @@ Change log
 
  - Minor bugfixes (thanks for your feedback)
  
+### Migration from 0.9.0
+
+ - Before updating your Ambar to this version, update your `ambar.py` script by running `wget -O ambar.py https://static.ambar.cloud/ambar.py && chmod +x ./ambar.py`
+
 0.9.0 (2017-04-14)
 -------------------