adjust Readme and GitHub actions according to template instructions

.github/workflows/build.yml

@@ -6,7 +6,7 @@ on:
     # rebuild everyday at 2:51
     # TIP: Choose a random time here so not all repositories are build at once:
     # https://www.random.org/clock-times/?num=1&earliest=01%3A00&latest=08%3A00&interval=5&format=html&rnd=new
-    - cron:  '51 2 * * *'
+    - cron:  '55 5 * * *'
 jobs:
   tests:
     strategy:
@@ -17,7 +17,7 @@ jobs:
         # The repo name as used in
         # https://github.com/nix-community/NUR/blob/master/repos.json
         nurRepo:
-          - <YOUR_REPO_NAME>
+          - schmittlauch
         # Set this to cache your build results in cachix for faster builds
         # in CI and for everyone who uses your cache.
         #