docs: document plans for MySQL

Author: gajus

README.md

@@ -6,7 +6,9 @@
 [![Canonical Code Style](https://img.shields.io/badge/code%20style-canonical-blue.svg?style=flat-square)](https://github.com/gajus/canonical)
 [![Twitter Follow](https://img.shields.io/twitter/follow/kuizinas.svg?style=social&label=Follow)](https://twitter.com/kuizinas)
 
-A type generator for Postgres.
+A generic type generator for various databases.
+
+The current supported database backend is Postgres. Track [#1 issue](https://github.com/gajus/database-types/issues/1) for MySQL support.
 
 ## Example usage
 

package.json

@@ -18,7 +18,7 @@
     "mightyql": "^3.2.0",
     "yargs": "^8.0.1"
   },
-  "description": "A type generator for Postgres.",
+  "description": "A generic type generator for various databases.",
   "devDependencies": {
     "ava": "^0.19.1",
     "babel-cli": "^6.24.1",