update readme

Author: wumpz

README.md

@@ -22,13 +22,19 @@ The generated hierarchy can be navigated using the Visitor Pattern.
 
 ## Extensions Version 0.8.7
 
+* Added first support for ALTER statements
+
+```sql
+ALTER TABLE mytable ADD COLUMN mycolumn varchar (255)
+```
+
 * Added support for PostgreSQL regular expression match operators.
 
 ```sql
 SELECT a, b FROM foo WHERE a ~ '[help].*';
-SELECT a, b FROM foo WHERE a ~* '[help].*'
-SELECT a, b FROM foo WHERE a !~ '[help].*'
-SELECT a, b FROM foo WHERE a !~* '[help].*'
+SELECT a, b FROM foo WHERE a ~* '[help].*';
+SELECT a, b FROM foo WHERE a !~ '[help].*';
+SELECT a, b FROM foo WHERE a !~* '[help].*';
 ```
 
 ## Extensions Version 0.8.6