Ignore examples in bower package

@jebeck: Now that Blip isn't pulling watson from the `example/` folder, I think we should remove it from the Bower package. Downloading >10MB of sample data on `bower install` isn't great :)

An idea, and this isn't high-priority but I thought of doing it for Blip too, is to put all sample data in a separate repo (say `tideline-sample-data`), and install it via npm. The thing is, your git history for Tideline is getting pretty big with these multi-MB files.. (same goes for Blip's sample data, although it has changed much for now).

@cheddar For client-side packages installed via Bower (so `tideline`, `platform-client` for now), could you remember to update the version in `bower.json` too please? (I did it for this one). Thanks

![screen shot 2014-03-28 at 4 09 45 pm](https://cloud.githubusercontent.com/assets/1306536/2551182/888c139c-b68b-11e3-99ee-7191d14bd843.png)