Basic part of sample doesn't work. With clean setup, cannot edit a beer. Solution included.

If you click on `[Edit]` for any beer, and edit any field and then press `[Save Changes]`, the following error is printed to the browser:

```
ReferenceError: rc is not defined
at done_edit_beer (c:\git\5\beersample-node\beer_app.js:163:13)
at callbacks (c:\git\5\beersample-node\node_modules\express\lib\router\index.js:164:37)
at param (c:\git\5\beersample-node\node_modules\express\lib\router\index.js:138:11)
at param (c:\git\5\beersample-node\node_modules\express\lib\router\index.js:135:11)
at pass (c:\git\5\beersample-node\node_modules\express\lib\router\index.js:145:5)
at Router._dispatch (c:\git\5\beersample-node\node_modules\express\lib\router\index.js:173:5)
at Object.router (c:\git\5\beersample-node\node_modules\express\lib\router\index.js:33:10)
at next (c:\git\5\beersample-node\node_modules\express\node_modules\connect\lib\proto.js:190:15)
at Object.staticMiddleware [as handle] (c:\git\5\beersample-node\node_modules\express\node_modules\connect\lib\middleware\static.js:55:61)
at next (c:\git\5\beersample-node\node_modules\express\node_modules\connect\lib\proto.js:190:15)
```
### Solution

It seems that `rc.` was erroneously added to the front of `rc.doc.brewery_id` on line 163 of `beer_app.js`. Remove the text `rc.`, save the file, and restart the server and the edit feature now works.

```
db.get( rc.doc.brewery_id, function(err, result) {
```

becomes

```
db.get( doc.brewery_id, function(err, result) {
```

Editing should now work.

Note: I'm really surprised this hasn't been noticed for nearly a year now. Is nobody learning to use Couchbase on Node.js?

Note #2: I really wish there were more sample applications for Node.js, more full-fledged examples that show best practices of using Node.js and of using Couchbase. Samples with production-ready error handling, and samples that are perhaps designed to demonstrate the scalability of couchbase as part of the application (like perhaps some data-processing on statistics or something involving alot of data crunching, maybe GeoSpatial). Perhaps someone could suggest some solid open source projects which do this, for me to look over?