Project home page doesn't have the proper go command

```
The home page of the project has the command to install as:
2. goinstall code.google.com/p/graphics-go/graphics

Should now be:
2. go get code.google.com/p/graphics-go/graphics
```

Original issue reported on code.google.com by `mw5...@gmail.com` on 28 Jul 2012 at 10:08
