Exclude examples folder for Bower

I think that examples should be excluded when installing through Bower, because the primary reason is to obtain netteForms.js. @vojtech-dobes's nette.ajax.js is dependant on this repository and including PHP code is, in my opinion, not only unneeded as it bloats the project, but also bad practise – Bower should be used for web component distribution, so shouldn't include PHP scripts if they're not directly related. For everything other we have Composer.

What are your thoughts?