Add a Release Process for SDK (#1803)

* Add docs/RELEASE_PROCESS.md

* Address PR comments

.github/PULL_REQUEST_TEMPLATE.md

@@ -8,7 +8,7 @@ v    If a checkbox is n/a - please still include it but + a little note why
 - [ ] Updated all relevant documentation (`docs/`)
 - [ ] Updated all relevant code comments
 - [ ] Wrote tests
-- [ ] Added entries in `PENDING.md`
+- [ ] Added entries in `PENDING.md` that include links to the relevant issue or PR that most accurately describes the change.
 - [ ] Updated `cmd/gaia` and `examples/`
 ___________________________________
 For Admin Use:

docs/RELEASE_PROCESS.md

@@ -0,0 +1,11 @@
+### `cosmos/cosmos-sdk` Release Process
+
+- [ ] 1. Decide on release designation (are we doing a patch, or minor version bump) and start a P.R. for the release
+- [ ] 2. Add commits/PRs that are desired for this release **that haven’t already been added to develop**
+- [ ] 3. Merge items in `PENDING.md` into the `CHANGELOG.md`. While doing this make sure that each entry contains links to issues/PRs for each item
+- [ ] 4. Summarize breaking API changes section under “Breaking Changes” section to the `CHANGELOG.md` to bring attention to any breaking API changes that affect RPC consumers.
+- [ ] 5. Tag the commit `{{ .Release.Name }}-rcN`
+- [ ] 6. Kick off 1 day of automated fuzz testing
+- [ ] 7. Release Lead assigns 2 people to perform buddy testing script
+- [ ] 8. If errors are found in either #6 or #7 go back to #2 (*NOTE*: be sure to increment the `rcN`)
+- [ ] 9. After #6 and #7 have successfully completed then merge the release PR and push the final release tag