Update release steps

updates #752

RELEASE.md

@@ -3,11 +3,16 @@
 1. Run `make check` to check that all tests pass.
 2. Decide on a version number, e.g. 1.0.5
 3. Run `make release VERSION=1.0.5`
+4. Update `index.html` to point to that version of the CDN (could perhaps be put in Makefile)
 4. Do a `git diff` to check if things look sane.
 4. Do a quick manual test with the `dist` files (via `index.html`)
 5. `git commit -am "New release 1.0.5"`
 6. `git tag -s v1.0.5
 7. Run `git push && git push --tags`
 8. Update http://conversejs.org
+    * Create a new version for the CDN by copying
+    * Check out the correct tag
+    * Run `make dist`
+    * Do the same for the root dir
 9. Create `1.0.5` directory for the CDN.
 10. Run `npm publish`