Merge pull request #1 from Songmu/bundle-credits

bundle CREDITS file into built package

.gitignore

@@ -2,3 +2,4 @@
 !.gitignore
 !.travis.yml
 dist/
+CREDITS

Makefile

@@ -14,10 +14,11 @@ deps:
 .PHONY: devel-deps
 devel-deps: deps
 	GO111MODULE=off go get ${u} \
-	  golang.org/x/lint/golint            \
-	  github.com/mattn/goveralls          \
-	  github.com/Songmu/godzil/cmd/godzil \
-	  github.com/Songmu/goxz/cmd/goxz     \
+	  golang.org/x/lint/golint                  \
+	  github.com/mattn/goveralls                \
+	  github.com/Songmu/godzil/cmd/godzil       \
+	  github.com/Songmu/goxz/cmd/goxz           \
+	  github.com/Songmu/gocredits/cmd/gocredits \
 	  github.com/tcnksm/ghr
 
 .PHONY: test
@@ -45,8 +46,12 @@ install: build
 bump: devel-deps
 	godzil release
 
+.PHONY: credits
+credits: devel-deps
+	gocredits -w .
+
 .PHONY: crossbuild
-crossbuild:
+crossbuild: credits
 	goxz -pv=v$(VERSION) -build-ldflags=$(BUILD_LDFLAGS) \
       -os=linux,darwin -d=./dist/v$(VERSION) ./cmd/*