docs: update for release v0.4.0

Author: rams23

CHANGELOG.md

@@ -1,3 +1,10 @@
+## 0.4.0 (2020-01-11)
+
+### Features
+
+* add structural directive for controlled errors management
+* add standard names for components
+
 ## 1.0.0 (2020-01-11)
 
 ### Features

README.md

@@ -1,6 +1,14 @@
 # NgxValidationErrors
 
-This library allows you to show dynamically created errors in forms using **FormControlName**.
+This library allows you to show dynamically created errors in forms.
+
+Choose the version corresponding to your Angular version:
+
+ Angular     | @xtream/ngx-validation-errors
+ ----------- | ------------------- 
+ 7           | 0.x               
+ 8           | 1.x                
+
 
 ## Messages generation