Merge pull request #173 from vbatts/versioning

version: more explicit version for comparison

Author: crosbymichael

README.md

@@ -2,7 +2,6 @@
 
 This project is where the [Open Container Initiative](http://www.opencontainers.org/) Specifications are written.
 This is a work in progress.
-We should have a first draft by end of July 2015.
 
 Table of Contents
 
@@ -20,6 +19,11 @@ To provide context for users the following section gives example use cases for e
 
 - A user can create a root filesystem and configuration, with low-level OS and host specific details, and launch it as a container under an Open Container runtime.
 
+## Releases
+
+There is a loose [Road Map](https://github.com/opencontainers/specs/wiki/RoadMap:) on the wiki.
+During the `0.x` series of OCI releases we make no backwards compatibility guarantees and intend to break the schema during this series.
+
 # The 5 principles of Standard Containers
 
 Define a unit of software delivery called a Standard Container.

version.go

@@ -1,4 +1,15 @@
 package specs
 
+import "fmt"
+
+const (
+	// VersionMajor is for an API incompatible changes
+	VersionMajor = 0
+	// VersionMinor is for functionality in a backwards-compatible manner
+	VersionMinor = 1
+	// VersionPatch is for backwards-compatible bug fixes
+	VersionPatch = 0
+)
+
 // Version is the specification version that the package types support.
-const Version = "pre-draft"
+var Version = fmt.Sprintf("%d.%d.%d", VersionMajor, VersionMinor, VersionPatch)