Updating CONTRIBUTING with release instructions

CONTRIBUTING.md

@@ -1,4 +1,25 @@
 ### Contributing code
 
-If you have improvements to Moto, send us your pull requests! For those
-just getting started, Github has a [howto](https://help.github.com/articles/using-pull-requests/).
+Moto has a [Code of Conduct](https://github.com/spulec/moto/blob/master/CODE_OF_CONDUCT.md), you can expect to be treated with respect at all times when interacting with this project.
+
+## Is there a missing feature?
+
+Moto is easier to contribute to than you probably think. There's [a list of which endpoints have been implemented](https://github.com/spulec/moto/blob/master/IMPLEMENTATION_COVERAGE.md) and we invite you to add new endpoints to existing services or to add new services.
+
+How to teach Moto to support a new AWS endpoint:
+
+* Create an issue describing what's missing. This is where we'll all talk about the new addition and help you get it done.
+* Create a [pull request](https://help.github.com/articles/using-pull-requests/) and mention the issue # in the PR description.
+* Try to add a failing test case. For example, if you're trying to implement `boto3.client('acm').import_certificate()` you'll want to add a new method called `def test_import_certificate` to `tests/test_acm/test_acm.py`.
+* If you can also implement the code that gets that test passing that's great. If not, just ask the community for a hand and somebody will assist you.
+
+# Maintainers
+
+## Releasing a new version of Moto
+
+You'll need a PyPi account and a Dockerhub account to release Moto. After we release a new PyPi package we build and push the [motoserver/moto](https://hub.docker.com/r/motoserver/moto/) Docker image.
+
+* First, `scripts/bump_version` modifies the version and opens a PR
+* Then, merge the new pull request
+* Finally, generate and ship the new artifacts with `make publish`
+

Makefile

@@ -36,7 +36,7 @@ tag_github_release:
 	git tag `python setup.py --version`
 	git push origin `python setup.py --version`
 
-publish: implementation_coverage \
+publish:
 	upload_pypi_artifact \
 	tag_github_release \
 	push_dockerhub_image

scripts/bump_version

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+main() {
+  local version=$1
+  if [[ -z "${version}" ]]; then
+    echo "USAGE: $0 1.3.2"
+    echo "Provide a new version number as an argument to bump the version"
+    echo -n "Current:"
+    grep version= setup.py
+    return 1
+  fi
+  sed -i '' "s/version=.*$/version='${version}',/g" setup.py
+  git checkout -b version-${version}
+  # Commit the new version
+  git commit setup.py -m "bumping to version ${version}"
+  # Commit an updated IMPLEMENTATION_COVERAGE.md
+  make implementation_coverage || true
+  # Open a PR
+  open https://github.com/spulec/moto/compare/master...version-${version}
+}
+
+main $@