diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..395838e
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,135 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:54a9254d3845e3a80d4957975abfc5e771a49d08379509ec4f9c99c1ccbe13a9"
+  name = "github.com/golang/protobuf"
+  packages = [
+    "proto",
+    "protoc-gen-go",
+    "protoc-gen-go/descriptor",
+    "protoc-gen-go/generator",
+    "protoc-gen-go/generator/internal/remap",
+    "protoc-gen-go/grpc",
+    "protoc-gen-go/plugin",
+    "ptypes",
+    "ptypes/any",
+    "ptypes/duration",
+    "ptypes/empty",
+    "ptypes/timestamp",
+  ]
+  pruneopts = "UT"
+  revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
+  version = "v1.2.0"
+
+[[projects]]
+  branch = "master"
+  digest = "1:166293c9bbd7ee31d2fc8465823015ad49cf9949dfbbc55c26076ced4f054360"
+  name = "golang.org/x/net"
+  packages = [
+    "http/httpguts",
+    "http2",
+    "http2/hpack",
+    "idna",
+    "internal/timeseries",
+    "trace",
+  ]
+  pruneopts = "UT"
+  revision = "16b79f2e4e95ea23b2bf9903c9809ff7b013ce85"
+
+[[projects]]
+  branch = "master"
+  digest = "1:7ea2a5bdb9273298b19f6c14d01c11f592ed57bd6a658f7c0ddf9927011cc763"
+  name = "golang.org/x/sys"
+  packages = ["unix"]
+  pruneopts = "UT"
+  revision = "584f3b12f43e1e55248c90e84804777009eed0a4"
+
+[[projects]]
+  digest = "1:a2ab62866c75542dd18d2b069fec854577a20211d7c0ea6ae746072a1dccdd18"
+  name = "golang.org/x/text"
+  packages = [
+    "collate",
+    "collate/build",
+    "internal/colltab",
+    "internal/gen",
+    "internal/tag",
+    "internal/triegen",
+    "internal/ucd",
+    "language",
+    "secure/bidirule",
+    "transform",
+    "unicode/bidi",
+    "unicode/cldr",
+    "unicode/norm",
+    "unicode/rangetable",
+  ]
+  pruneopts = "UT"
+  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
+  version = "v0.3.0"
+
+[[projects]]
+  branch = "master"
+  digest = "1:3a96320e41c72ba57dfbf5eb253197b00759e327158ca70e0a538f74796f533f"
+  name = "google.golang.org/genproto"
+  packages = [
+    "googleapis/api/annotations",
+    "googleapis/rpc/status",
+  ]
+  pruneopts = "UT"
+  revision = "5fe7a883aa19554f42890211544aa549836af7b7"
+
+[[projects]]
+  digest = "1:9ab5a33d8cb5c120602a34d2e985ce17956a4e8c2edce7e6961568f95e40c09a"
+  name = "google.golang.org/grpc"
+  packages = [
+    ".",
+    "balancer",
+    "balancer/base",
+    "balancer/roundrobin",
+    "binarylog/grpc_binarylog_v1",
+    "codes",
+    "connectivity",
+    "credentials",
+    "credentials/internal",
+    "encoding",
+    "encoding/proto",
+    "grpclog",
+    "internal",
+    "internal/backoff",
+    "internal/binarylog",
+    "internal/channelz",
+    "internal/envconfig",
+    "internal/grpcrand",
+    "internal/grpcsync",
+    "internal/syscall",
+    "internal/transport",
+    "keepalive",
+    "metadata",
+    "naming",
+    "peer",
+    "resolver",
+    "resolver/dns",
+    "resolver/passthrough",
+    "stats",
+    "status",
+    "tap",
+  ]
+  pruneopts = "UT"
+  revision = "a02b0774206b209466313a0b525d2c738fe407eb"
+  version = "v1.18.0"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/golang/protobuf/proto",
+    "github.com/golang/protobuf/protoc-gen-go",
+    "github.com/golang/protobuf/protoc-gen-go/descriptor",
+    "github.com/golang/protobuf/ptypes/any",
+    "github.com/golang/protobuf/ptypes/empty",
+    "google.golang.org/genproto/googleapis/api/annotations",
+    "google.golang.org/grpc",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1