Add ReadMe with install instructions

Signed-off-by: Gerald Venzl <gerald.venzl@gmail.com>

jOOQ-examples/Sakila/oracle-sakila-db/README.md

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+# Installation instructions
+
+## Create schema user
+Connect as an admin user such as `SYSTEM` or `SYS` and create a new schema user:
+
+```sql
+SQL> CREATE USER SAKILA IDENTIFIED BY sakila;
+
+SQL> GRANT CONNECT, RESOURCE, CREATE VIEW, UNLIMITED TABLESPACE TO SAKILA;
+```
+
+## Create data model
+Connect as the `SAKILA` user and run:
+
+```sql
+SQL> @oracle-sakila-schema.sql
+```
+
+## Load data
+Connect as the `SAKILA` user and run:
+
+```sql
+SQL> @oracle-sakila-insert-data.sql
+```
+
+## Delete data
+Connect as the `SAKILA` user and run:
+
+```sql
+SQL> @oracle-sakila-delete-data.sql
+```
+
+## Drop all objects
+Connect as the `SAKILA` user and run:
+
+```sql
+SQL> @oracle-sakila-drop-objects.sql
+```
+
+## Remove schema user
+Connect as an admin user such as `SYSTEM` or `SYS` and drop the schema user:
+
+```sql
+SQL> DROP USER SAKILA CASCADE;
+```