docs(all): update license disclaimer

README.md

@@ -25,7 +25,7 @@ Add to your `Cargo.toml`:
 ```diff
 [dependencies]
 ...
-+ rqlite-rs = "0.3.18"
++ rqlite-rs = "0.3.19"
 ```
 
 ## Quick Start
@@ -76,4 +76,8 @@ Contributions are welcome!
 
 ## License
 
-**rqlite-rs** is licensed under the MIT license. See [LICENSE](LICENSE) for details.
+**rqlite-rs** is licensed under either of
+- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or [http://www.apache.org/licenses/LICENSE-2.0](http://www.apache.org/licenses/LICENSE-2.0))
+- MIT license ([LICENSE-MIT](LICENSE-MIT) or [http://opensource.org/licenses/MIT](http://opensource.org/licenses/MIT))
+
+at your option.