Sort keywords in package.json

Author: sehrope

package.json

@@ -3,11 +3,11 @@
   "version": "7.3.0",
   "description": "PostgreSQL client - pure javascript & libpq with the same API",
   "keywords": [
-    "postgres",
-    "pg",
+    "database",
     "libpq",
+    "pg",
     "postgre",
-    "database",
+    "postgres",
     "rdbms"
   ],
   "homepage": "http://github.com/brianc/node-postgres",