Add doc on How to open "SVN, Java Stack Trace, CDT", etc.

```
Need to add a doc comment that the plugin adds a "Open with Log Viewer"
context menu item to Console (works for consoles like SVN, Maven, but I'm
not sure how with stack trace yet).  I
```

Original issue reported on code.google.com by `jeffjjen...@gmail.com` on 31 Jan 2010 at 6:56
- Blocked on: #12
