commit bf0c35b6b660fa15ad2469a340d3d49f7637cbfa
author Miroslav Genov <mgenov@gmail.com> Wed Aug 03 12:51:06 2016 +0300
committer Brad Fitzpatrick <bradfitz@golang.org> Wed Aug 03 14:42:34 2016 +0000
tree 6daf6f8ed5df60b9be0ba0a18460ca1f4156d3bb
parent 9e7459099f9afd6a15464d69d93c6eed49bb545d

tip/doc: update doc to match latest gcloud syntax

gcloud command no longer requires preview for deployment and is showing
warning when command is executed:

```
WARNING: The `gcloud preview app` command group is deprecated; please
use the `gcloud app` commands instead.
```

This change is removing "preview" text from README to make deploy
command up to date with gcloud.

Change-Id: I64d390ab4891f82fe608c64be20fae01a80d00fc
Reviewed-on: https://go-review.googlesource.com/25430
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>