Bring your own node-postgres (#43)

* Bring your own node-postgres version

* Updated installation instructions

* Revert package version number

Author: MichielDeMey

README.md

@@ -9,7 +9,7 @@ Under the hood the [node-postgres](https://github.com/brianc/node-postgres) is u
 
 ## Install
 ```
-npm i fastify-postgres --save
+npm i pg fastify-postgres --save
 ```
 ## Usage
 Add it to you project with `register` and you are done!

package.json

@@ -27,13 +27,16 @@
   },
   "homepage": "https://github.com/fastify/fastify-postgres#readme",
   "dependencies": {
-    "fastify-plugin": "^1.4.0",
-    "pg": "^7.8.0"
+    "fastify-plugin": "^1.4.0"
   },
   "devDependencies": {
     "fastify": "^1.13.4",
+    "pg": "*",
     "pg-native": "^3.0.0",
     "standard": "^12.0.0",
     "tap": "^12.5.2"
+  },
+  "peerDependencies": {
+    "pg": ">=6.0.0"
   }
 }