move from Godeps to vndr

This uses the standard go vendor location instead of old Godeps
location.

Also remove usage of symlink GOPATH. Since our README mentions that you
should build it inside GOPATH, i think its a reasonable to assume that
you dont need to create a tmp GOPATH.

Signed-off-by: Daniel Dao <dqminh89@gmail.com>

vendor/github.com/opencontainers/runtime-spec/specs-go/version.go

@@ -0,0 +1,18 @@
+package specs
+
+import "fmt"
+
+const (
+	// VersionMajor is for an API incompatible changes
+	VersionMajor = 1
+	// VersionMinor is for functionality in a backwards-compatible manner
+	VersionMinor = 0
+	// VersionPatch is for backwards-compatible bug fixes
+	VersionPatch = 0
+
+	// VersionDev indicates development branch. Releases will be empty string.
+	VersionDev = "-rc3"
+)
+
+// Version is the specification version that the package types support.
+var Version = fmt.Sprintf("%d.%d.%d%s", VersionMajor, VersionMinor, VersionPatch, VersionDev)