Update META.json

Change version of meta-spec, this was a mistake it's 1.0.0 and add "adjustgmbh" as author to publish this extension on PGXN.

Like adjust/pg-mvtbl#8 (comment)
This extension is new and has not yet been shared on PGXN.

META.json

@@ -1,5 +1,6 @@
 {
    "name": "base62",
+   "author": "adjustgmbh",
    "abstract": "Integers represented in base62",
    "version": "0.0.1",
    "maintainer": [ "Artur Zakirov <[email protected]>", "Manuel Kniep <[email protected]>" ],
@@ -14,14 +15,14 @@
       }
    },
    "meta-spec": {
-     "version": "0.0.1",
+     "version": "1.0.0",
      "url": "http://pgxn.org/meta/spec.txt"
    },
    "description": "Integers represented in base62",
    "prereqs": {
       "runtime": {
         "requires": {
-           "PostgreSQL": "9.3.0"
+           "PostgreSQL": "10.0"
         }
       }
    },