Build the tool:

• Checkout the repo and then either via go install or bazel build //buildifier
• If you already have 'go' installed, then build a binary via:

go get -d -u github.com/bazelbuild/buildifier/buildifier && go generate github.com/bazelbuild/buildifier/core && go install github.com/bazelbuild/buildifier/buildifier

Note: the extra 'generate' step as 'go get' does not run 'generate' when installing.

Use buildifier to create standardized formatting for BUILD files in the same way that clang-format is used for source files.