Add dependencies.

Gopkg.lock

+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  branch = "master"
+  digest = "1:c10265d5a71326618d37e97169eddb3582f78e8ac7dcf87403b4cf619efd519a"
+  name = "github.com/DHowett/go-plist"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "591f970eefbbeb04d7b37f334a0c4c3256e32876"
+
+[[projects]]
+  digest = "1:cf31692c14422fa27c83a05292eb5cbe0fb2775972e8f1f8446a71549bd8980b"
+  name = "github.com/pkg/errors"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "ba968bfe8b2f7e042a574c888954fccecfa385b4"
+  version = "v0.8.1"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/DHowett/go-plist",
+    "github.com/pkg/errors",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1

Gopkg.toml

+# 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]]
+  branch = "master"
+  name = "github.com/DHowett/go-plist"
+
+[[constraint]]
+  name = "github.com/pkg/errors"
+  version = "0.8.1"
+
+[prune]
+  go-tests = true
+  unused-packages = true