Fix for Orange paths

SimpleCV prompts this:

```
WARNING: I'm sorry, but you need the orange machine learning library
installed to use this
```

However orange library is installed, but system paths are not correctly set. Importing `Orange` with capital O, and then `orange` fixes the issue, so SimpleCV can use it. I know it's quite hacky.

Apparently this is due to a bug in orange installer (installed through pip install) in some Operating system (Ubuntu 12.04):
http://orange.biolab.si/forum/viewtopic.php?f=4&t=1500

Cheers
Miguel