meta: Write how to release v4

Author: HazAT

.craft.yml

@@ -25,4 +25,3 @@ targets:
     includeNames: /^sentry-node-.*\.tgz$/
     config:
       canonical: 'npm:@sentry/node'
-  - name: gh-pages

HOW TO RELEASE v4.md

@@ -0,0 +1,7 @@
+1. Update Changelog and bump version manually with
+
+`yarn lerna version --exact --no-git-tag-version --no-push --include-merged-tags VERSION`
+
+2. Publish it with `craft` by specifying a rev
+
+`craft publish VERSION --rev REV`