Accept higher jquery versions

Parsley works fine with jquery versions higher than 1.8. At the moment this constraint prevents me to install jquery 1.9 (with bower version 0.10).

Output of bower:

```bash
Unable to find a suitable version for jquery
    custom-package requires jquery ~1.9.1
    jquery-pjax requires jquery >=1.8
    parsleyjs requires jquery 1.8.*
    fitvids requires jquery >= 1.7.0

In order to resolve this, you need to do one of two things:
    * Manually add either jquery ~1.9.1, >=1.8, 1.8.* or >= 1.7.0 to your component.json file
    * Run this command again with the --save and --force-latest flags
```