Updated Installation (markdown)

Installation.md

@@ -123,7 +123,15 @@ The table prefix option is called `tbl`.
 > If you gain any experience running PrivateBin on other RDBMS, please let us
 > know.
 
-For reference or if you want to create the table schema for yourself (replace
+The following GRANTs (privileges) are required for the PrivateBin user in **MySQL**. In normal operation:
+- INSERT, SELECT, DELETE on the paste and comment tables
+- SELECT on the config table
+
+If you want PrivateBin to handle table creation (when you create the first paste) and updates (after you update PrivateBin to a new release), you need to give the user these additional privileges:
+- CREATE, INDEX and ALTER on the database
+- INSERT and UPDATE on the config table
+
+For reference or if you want to create the table schema for yourself to avoid having to give PrivateBin too many permissions (replace
 `prefix_` with your own table prefix and create the table schema with your favourite MySQL console):
 
 ```sql
@@ -158,4 +166,4 @@ CREATE TABLE prefix_config (
 INSERT INTO prefix_config VALUES('VERSION', '1.1.1');
 ```
 
-In PostgreSQL, the data, attachment, nickname and vizhash columns needs to be TEXT and not BLOB or MEDIUMBLOB.
+In **PostgreSQL**, the data, attachment, nickname and vizhash columns needs to be TEXT and not BLOB or MEDIUMBLOB.