Add governance and release process docs

https://groups.google.com/a/opencontainers.org/forum/#!topic/dev/x-Oh3PDz1Y8

Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>

GOVERNANCE.md

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+# Project governance
+
+The [OCI charter][charter] §5.b.viii tasks an OCI Project's maintainers (listed in the repository's MAINTAINERS file and sometimes referred to as "the TDC", [§5.e][charter]) with:
+
+> Creating, maintaining and enforcing governance guidelines for the TDC, approved by the maintainers, and which shall be posted visibly for the TDC.
+
+This section describes generic rules and procedures for fulfilling that mandate.
+
+## Proposing a motion
+
+A maintainer SHOULD propose a motion on the dev@opencontainers.org mailing list (except [security issues](#security-issues)) with another maintainer as a co-sponsor.
+
+## Voting
+
+Voting on a proposed motion SHOULD happen on the dev@opencontainers.org mailing list (except [security issues](#security-issues)) with maintainers posting LGTM or REJECT.
+Maintainers MAY also explicitly not vote by posting ABSTAIN (which is useful to revert a previous vote).
+Maintainers MAY post multiple times (e.g. as they revise their position based on feeback), but only their final post counts in the tally.
+A proposed motion is adopted if two-thirds of votes cast, a quorum having voted, are in favor of the release.
+
+Voting SHOULD remain open for a week to collect feedback from the wider community and allow the maintainers to digest the proposed motion.
+Under exceptional conditions (e.g. non-major security fix releases) proposals which reach quorum with unanimous support MAY be adopted earlier.
+
+A maintainer MAY choose to reply with REJECT.
+A maintainer posting a REJECT MUST include a list of concerns or links to written documentation for those concerns (e.g. GitHub issues or mailing-list threads).
+The maintainers SHOULD try to resolve the concerns and wait for the rejecting maintainer to change their opinion to LGTM.
+However, a motion MAY be adopted with REJECTs, as outlined in the previous paragraphs.
+
+## Quorum
+
+A quorum is established when at least two-thirds of maintainers have voted.
+
+For projects that are not specifications, a [motion to release](#release-approval) MAY be adopted if the tally is at least three LGTMs and no REJECTs, even if three votes does not meet the usual two-thirds quorum.
+
+## Security issues
+
+Motions with sensitive security implications MUST be proposed on the security@opencontainers.org mailing list instead of dev@opencontainers.org, but should otherwise follow the standard [proposal](#proposing-a-motion) process.
+The security@opencontainers.org mailing list includes all members of the TOB.
+The TOB will contact the project maintainers and provide a channel for discussing and voting on the motion, but voting will otherwise follow the standard [voting](#voting) and [quorum](#quorum) rules.
+The TOB and project maintainers will work together to notify affected parties before making an adopted motion public.
+
+## Amendments
+
+The [project governance](#project-governance) rules and procedures MAY be ammended or replaced using the procedures themselves.
+The MAINTAINERS of this project governance document is the total set of MAINTAINERS from all Open Containers projects (runC, runtime-spec, and image-spec).
+
+## Subject templates
+
+Maintainers are busy and get lots of email.
+To make project proposals recognizable, proposed motions SHOULD use the following subject templates.
+
+### Proposing a motion
+
+> [{project} VOTE]: {motion description} (closes {end of voting window})
+
+For example:
+
+> [runtime-spec VOTE]: Tag 0647920 as 1.0.0-rc (closes 2016-06-03 20:00 UTC)
+
+### Tallying results
+
+After voting closes, a maintainer SHOULD post a tally to the motion thread with a subject template like:
+
+> [{project} {status}]: {motion description} (+{LGTMs} -{REJECTs} #{ABSTAINs})
+
+Where `{status}` is either `adopted` or `rejected`.
+For example:
+
+> [runtime-spec adopted]: Tag 0647920 as 1.0.0-rc (+6 -0 #3)
+
+[charter]: https://www.opencontainers.org/about/governance

RELEASES.md

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+# Releases
+
+The release process hopes to encourage early, consistent consensus-building during project development.
+The mechanisms used are regular community communication on the mailing list about progress, scheduled meetings for issue resolution and release triage, and regularly paced and communicated releases.
+Releases are proposed and adopted or rejected using the usual [project governance](GOVERNANCE.md) rules and procedures.
+
+An anti-pattern that we want to avoid is heavy development or discussions "late cycle" around major releases.
+We want to build a community that is involved and communicates consistently through all releases instead of relying on "silent periods" as a judge of stability.
+
+## Parallel releases
+
+A single project MAY consider several motions to release in parallel.
+However each motion to release after the initial 0.1.0 MUST be based on a previous release that has already landed.
+
+For example, runtime-spec maintainers may propose a v1.0.0-rc2 on the 1st of the month and a v0.9.1 bugfix on the 2nd of the month.
+They may not propose a v1.0.0-rc3 until the v1.0.0-rc2 is accepted (on the 7th if the vote initiated on the 1st passes).
+
+## Specifications
+
+The OCI maintains three categories of projects: specifications, applications, and conformance-testing tools.
+However, specification releases have special restrictions in the [OCI charter][charter]:
+
+* They are the target of backwards compatibility (§7.g), and
+* They are subject to the OFWa patent grant (§8.d and e).
+
+To avoid unfortunate side effects (onerous backwards compatibity requirements or Member resignations), the following additional procedures apply to specification releases:
+
+### Planning a release
+
+Every OCI specification project SHOULD hold meetings that involve maintainers reviewing pull requests, debating outstanding issues, and planning releases.
+This meeting MUST be advertised on the project README and MAY happen on a phone call, video conference, or on IRC.
+Maintainers MUST send updates to the dev@opencontainers.org with results of these meetings.
+
+Before the specification reaches v1.0.0, the meetings SHOULD be weekly.
+Once a specification has reached v1.0.0, the maintainers may alter the cadence, but a meeting MUST be held within four weeks of the previous meeting.
+
+The release plans, corresponding milestones and estimated due dates MUST be published on GitHub (e.g. https://github.com/opencontainers/runtime-spec/milestones).
+GitHub milestones and issues are only used for community organization and all releases MUST follow the [project governance](GOVERNANCE.md) rules and procedures.
+
+### Timelines
+
+Specifications have a variety of different timelines in their lifecycle.
+
+* Pre-v1.0.0 specifications SHOULD release on a monthly cadence to garner feedback.
+* Major specification releases MUST release at least three release candidates spaced a minimum of one week apart.
+  This means a major release like a v1.0.0 or v2.0.0 release will take 1 month at minimum: one week for rc1, one week for rc2, one week for rc3, and one week for the major release itself.
+  Maintainers SHOULD strive to make zero breaking changes during this cycle of release candidates and SHOULD restart the three-candidate count when a breaking change is introduced.
+  For example if a breaking change is introduced in v1.0.0-rc2 then the series would end with v1.0.0-rc4 and v1.0.0.
+- Minor and patch releases SHOULD be made on an as-needed basis.
+
+[charter]: https://www.opencontainers.org/about/governance