Update release instructions

Author: bhousel

RELEASE.md

@@ -1,12 +1,18 @@
 ## Release Checklist
 
 #### Update version, tag, and publish
-- [ ] git checkout master
-- [ ] npm install
-- [ ] Update CHANGELOG
-- [ ] Update version number in `package.json`
-- [ ] git add .
-- [ ] git commit -m 'vA.B.C'
-- [ ] git tag vA.B.C
-- [ ] git push origin master vA.B.C
-- [ ] npm publish
+```bash
+$ git checkout master
+$ npm install
+$ npm run test
+$ Update CHANGELOG
+$ Update version number in `package.json`
+$ git add .
+$ git commit -m 'vA.B.C'
+$ git tag vA.B.C
+$ git push origin master vA.B.C
+$ npm publish
+
+```
+* Open https://github.com/bhousel/node-diff3/tags
+* Click "Add Release Notes" and link to the CHANGELOG#version