fix(bumpver): reference files which need bumping

One file was missing which needed to be bumped:

```
docs/installing_deis/install-platform.rst
```

Author: Matthew Fisher

contrib/bumpver/README.md

@@ -52,7 +52,9 @@ $ ./contrib/bumpver/bumpver 0.14.0 \
 ```
 
 Of course, you should **always** check the changes with `git diff` before committing
-anything to version control.
+anything to version control. You can also check the
+[Release Checklist](http://docs.deis.io/en/latest/contributing/releases/) for the
+most up-to-date list of files to bump.
 
 Please add any issues you find with this software to the
 [Deis project](https://github.com/deis/deis/issues).

docs/contributing/releases.rst

@@ -36,6 +36,7 @@ deis repo
         deisctl/deisctl.go \
         docs/contributing/test_plan.rst \
         docs/installing_deis/install-deisctl.rst \
+        docs/installing_deis/install-platform.rst \
         docs/managing_deis/upgrading-deis.rst
 
 - Edit deisctl/cmd/cmd.go and change the default in the RefreshUnits usage string