Update README.md

Author: burggraf

README.md

@@ -12,6 +12,11 @@
 - Packaged as a PostgreSQL extension
 
 ## Installation
+Method 1: Copy the contents of the file `EASY-INSTALL-Vx.yy.SQL` into a SQL window in your database and run it.
+- The VLP8 extension must be available on your server
+- The HTTP extension must be available on your server
+
+Method 2: Regular extension installation method (if SUPASCRIPT is already available on your server along with PLV8 and HTTP)
 ```sql
 CREATE EXTENSION SUPASCRIPT CASCADE
 ```