docs(readme): update nightly badge to include pre-releases

As of build-emacs-for-macos v0.6.8, the emacs-builder tool supports
handling stable Emacs release differently, so we can easily separate
them from the regular nightly builds.

.github/workflows/build.yml

@@ -40,7 +40,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           repository: jimeh/build-emacs-for-macos
-          ref: "v0.6.2"
+          ref: "v0.6.8"
           path: builder
       - uses: actions/setup-go@v2
         with:
@@ -96,7 +96,7 @@ jobs:
         uses: actions/checkout@v2
         with:
           repository: jimeh/build-emacs-for-macos
-          ref: "v0.6.2"
+          ref: "v0.6.8"
           path: builder
       - uses: ruby/setup-ruby@v1
         with:
@@ -192,9 +192,14 @@ jobs:
         with:
           name: dmg
           path: builds
-      - name: Publish disk image to GitHub Release
+      - name: Publish disk image to a GitHub Release
         run: >-
           bin/emacs-builder -l debug release --plan build-plan.yml publish
           ${{ github.event.inputs.extraReleaseArgs }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Trigger update casks workflow in homebrew tap
+        run: >-
+          gh workflow run --repo jimeh/homebrew-emacs-builds update-casks.yml
+        env:
+          GITHUB_TOKEN: ${{ secrets.TAP_REPO_TOKEN }}

.github/workflows/dispatch-cask-update.yml

@@ -1,15 +0,0 @@
----
-name: Dispatch Cask Update
-on:
-  release:
-    types: [published]
-
-jobs:
-  dispatch-cask-update:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Run update formulas workflow in jimeh/homebrew-emacs-builds
-        run: >-
-          gh workflow run --repo jimeh/homebrew-emacs-builds update-formulas.yml
-        env:
-          GITHUB_TOKEN: ${{ secrets.TAP_REPO_TOKEN }}

README.md

@@ -8,7 +8,7 @@
 
 <p align="center">
   <a href="https://github.com/jimeh/emacs-builds/releases/latest">
-    <img alt="GitHub release (latest)" src="https://img.shields.io/github/v/release/jimeh/emacs-builds?style=flat&label=nightly&color=%237F5AB6&logo=GNU%20Emacs&logoColor=white">
+    <img alt="GitHub release (latest)" src="https://img.shields.io/github/v/release/jimeh/emacs-builds?include_prereleases&style=flat&label=nightly&color=%237F5AB6&logo=GNU%20Emacs&logoColor=white&sort=semver">
   </a>
   <a href="https://github.com/jimeh/emacs-builds/issues">
     <img alt="GitHub issues" src="https://img.shields.io/github/issues-raw/jimeh/emacs-builds?style=flat&logo=github&colorColor=white">