Add dependency management using go deps.

.gitignore

@@ -1 +1,2 @@
 bin
+vendor

Gopkg.lock

@@ -0,0 +1,39 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:ea40c24cdbacd054a6ae9de03e62c5f252479b96c716375aace5c120d68647c8"
+  name = "github.com/hashicorp/hcl"
+  packages = [
+    ".",
+    "hcl/ast",
+    "hcl/parser",
+    "hcl/scanner",
+    "hcl/strconv",
+    "hcl/token",
+    "json/parser",
+    "json/scanner",
+    "json/token",
+  ]
+  pruneopts = "UT"
+  revision = "8cb6e5b959231cc1119e43259c4a608f9c51a241"
+  version = "v1.0.0"
+
+[[projects]]
+  digest = "1:5198ae017f3c145a90a2d11cd3ea079c83e1c37cc68af44c8fa5bee201f51ab4"
+  name = "github.com/tj/docopt"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "c8470e45692f168e8b380c5d625327e756d7d0a9"
+  version = "v1.0.0"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/hashicorp/hcl",
+    "github.com/hashicorp/hcl/hcl/ast",
+    "github.com/tj/docopt",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

@@ -0,0 +1,38 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/hashicorp/hcl"
+  version = "1.0.0"
+
+[[constraint]]
+  name = "github.com/tj/docopt"
+  version = "1.0.0"
+
+[prune]
+  go-tests = true
+  unused-packages = true

Makefile

@@ -11,10 +11,10 @@ GOBUILD     := go build -ldflags "-X main.version=$(VERSION)"
 
 
 .PHONY: all
-all: build
+all: deps build
 
 .PHONY: build
-build: build-darwin-amd64 build-freebsd-amd64 build-linux-amd64 build-windows-amd64
+build: deps build-darwin-amd64 build-freebsd-amd64 build-linux-amd64 build-windows-amd64
 
 build-darwin-amd64:
 	GOOS=darwin GOARCH=amd64 $(GOBUILD) -o bin/$(NAME)-v$(VERSION)-darwin-amd64
@@ -27,3 +27,7 @@ build-linux-amd64:
 
 build-windows-amd64:
 	GOOS=windows GOARCH=amd64 $(GOBUILD) -o bin/$(NAME)-v$(VERSION)-windows-amd64
+
+.PHONY: deps
+deps:
+	dep ensure