Don't distribute oracle drivers

Author: Elliot

.gitignore

@@ -10,3 +10,5 @@ wrapper-old/
 wrapper/graal\.tar\.gz
 
 wrapper/graalvm-ce-19\.1\.0/
+oracle/*.so
+oracle/*.dylib

README.md

@@ -23,14 +23,23 @@ More may be supported, but these are the ones we package, test, and distribute.
 - Microsoft SQL Server (mssql)
   - com.microsoft.sqlserver:mssql-jdbc:7.3.0.jre8-preview
 - Oracle DB (oracle)
-  - com.oracle:ojdbc6:12.1.0.1
+  - com.oracle:ojdbc6:12.1.0.1 (*NOT* distributed, as license appears to prohibit it)
 - PostgreSQL (postgresql)
   - org.postgresql:postgresql:42.2.5.jre6
 
+### Building
+
+For oracle, or if you want to build the native libraries yourself...
+
+On osx run `./build-all.sh` to build for both mac and linux.
+
+On linux, run individual scripts e.g. `./wrapper/scripts/wrap-oracle.sh` 
+
 ### Usage
 
 Import oracle, mssql, or postgresql driver.
 
+
 ```golang
 import _ "github.com/identitii/gdbc/oracle"
 ```