add action to bump formulae

.github/workflows/bump-formula.yml

@@ -0,0 +1,20 @@
+name: Bump Homebrew nef formula
+
+on:
+  push:
+    tags:
+      - "[0-9]+.[0-9]+.[0-9]+"
+
+jobs:
+  homebrew:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Bump formulae
+      uses: dawidd6/[email protected]
+      with:
+        token: ${{ secrets.HOMEBREW_NEF_TOKEN }}
+        formula: nef
+        livecheck: true

Makefile

@@ -49,14 +49,3 @@ clean:
 .PHONY: zip
 zip: build
 	@zip $(TOOL_NAME).$(version).zip $(foreach binary,$(BINARIES),$(BINARIES_PATH)/$(binary))
-
-.PHONY: get_sha
-get_sha:
-	@curl -OLs https://github.com/bow-swift/$(TOOL_NAME)/archive/$(TAR_FILENAME)
-	@shasum -a 256 $(TAR_FILENAME) | cut -f 1 -d " " > sha_$(version).txt
-	@rm $(TAR_FILENAME)
-
-.PHONY: brew_push
-brew_push: get_sha
-	SHA=$(shell cat sha_$(version).txt); \
-	brew bump-formula-pr --url="https://github.com/bow-swift/$(TOOL_NAME)/archive/$(TAR_FILENAME)" --sha256=$$SHA