Upgrade to Go 1.11 and use modules (#33)

This commit modernizes the repository organization a bit.

In short, this,

- Upgrades to Go 1.11.
- Uses Go modules instead of Glide.
- Drops errcheck, which we rarely use in our codebase internally.
- Uses `./...` to run build, tests, etc. since that does not have to
  account for vendor anymore.
- Drops `-installsuffix cgo` from the production build. This was a
  workaround for pre-1.10 versions of Go. See
  https://github.com/golang/go/issues/9344#issuecomment-69944514.
- Uses a tools.go as recommended in [go-modules-by-example/tools][1] to
  pin to tool dependencies.
- Uses `go run` instead of `go install`ing tools globally.

[1]: https://github.com/go-modules-by-example/index/tree/master/010_tools

Tested locally with `make docker-launch`.

1 files changed, 18 insertions, 0 deletions

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..86ea6f5
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,18 @@
+module go.uber.org/sally
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/golang/lint v0.0.0-20181217174547-8f45f776aaf1
+	github.com/julienschmidt/httprouter v1.2.0
+	github.com/kisielk/gotool v1.0.0 // indirect
+	github.com/kr/pretty v0.1.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/testify v1.2.2
+	github.com/yosssi/gohtml v0.0.0-20180130040904-97fbf36f4aa8
+	golang.org/x/lint v0.0.0-20181217174547-8f45f776aaf1 // indirect
+	golang.org/x/net v0.0.0-20181220203305-927f97764cc3 // indirect
+	golang.org/x/tools v0.0.0-20181221235234-d00ac6d27372 // indirect
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	gopkg.in/yaml.v2 v2.2.2
+	honnef.co/go/tools v0.0.0-20180920025451-e3ad64cb4ed3
+)