Add makefile (#20)

* Abort travis pipeline if the first task fails

Signed-off-by: Iosmanthus Teng <myosmanthustree@gmail.com>

* Add buildifier to check bzl files

Signed-off-by: Iosmanthus Teng <myosmanthustree@gmail.com>

* formated by buildifier

Signed-off-by: Iosmanthus Teng <myosmanthustree@gmail.com>

* add jobs: checks and tests

Signed-off-by: Iosmanthus Teng <myosmanthustree@gmail.com>

* Add a makefile

* make format to format the code including: BUILDs/WORKSPACE and
srcs/hdrs
* make test/simple-test to run test suite
* make clean to clean up the binaries

Signed-off-by: Iosmanthus Teng <myosmanthustree@gmail.com>

Makefile

@@ -0,0 +1,14 @@
+all: format test
+
+format:
+	@buildifier -r .
+	@find . -iname "*.cc" -or -iname "*.h" | xargs clang-format -i
+
+simple-test:
+	@bazel test tests
+
+test:
+	@bazel test tests --keep_going --test_output=all
+
+clean:
+	@bazel clean