add makefile

Author: grosser

CONTRIBUTING.md

@@ -6,8 +6,10 @@ Your contributions to Ginkgo are essential for its long-term maintenance and imp
 - Ensure adequate test coverage:
     - When adding to the Ginkgo library, add unit and/or integration tests (under the `integration` folder).
     - When adding to the Ginkgo CLI, note that there are very few unit tests.  Please add an integration test.
-- Make sure all the tests succeed via `ginkgo -r -p`
-- Vet your changes via `go vet ./...`
-- Update the documentation. Ginkgo uses `godoc` comments and documentation in `docs/index.md`.  You can run `bundle exec jekyll serve` in the `docs` directory to preview your changes.
+- Run `make` or:
+  - Install ginkgo locally via `go install ./...`
+  - Make sure all the tests succeed via `ginkgo -r -p`
+  - Vet your changes via `go vet ./...`
+- Update the documentation. Ginkgo uses `godoc` comments and documentation in `docs/index.md`.  You can run `bundle && bundle exec jekyll serve` in the `docs` directory to preview your changes.
 
 Thanks for supporting Ginkgo!

Makefile

@@ -0,0 +1,15 @@
+# default task since it's first
+.PHONY: all
+all: install vet test
+
+.PHONY: install
+install:
+	which ginkgo 2>&1 >/dev/null || go install ./...
+
+.PHONY: test
+test:
+	ginkgo -r -p
+
+.PHONY: vet
+vet:
+	go vet ./...