Update supported platforms section in README

Author: vweevers

README.md

@@ -39,7 +39,7 @@ It is **strongly recommended** that you use `levelup` in preference to `rocksdb`
 
 ## Supported Platforms
 
-We aim to support _at least_ Active LTS and Current Node.js releases, Electron 4.0.0, as well as any future Node.js and Electron releases thanks to [N-API](https://nodejs.org/api/n-api.html). Because N-API has an experimental status in node 6 and early 8.x releases, the minimum node version for `rocksdb` is `8.6.0`.
+We aim to support _at least_ Active LTS and Current Node.js releases, Electron 5.0.0, as well as any future Node.js and Electron releases thanks to [N-API](https://nodejs.org/api/n-api.html). The minimum node version for `rocksdb` is `10.12.0`.
 
 The `rocksdb` npm package ships with prebuilt binaries for popular 64-bit platforms and is known to work on: