updated jquery requirement to 2.0.0 or greater

This resolves issue where user is prompted to pick jquery version when doing npm install.

Foundation requires new version of jquery than ember app kit.

npm console message
```
Unable to find a suitable version for jquery, please choose one:
    1) jquery#~1.9.1 which resolved to 1.9.1 and has ember-app-kit as dependants
    2) jquery#>= 1.7 which resolved to 2.0.3 and has ember#1.2.0, ember#1.2.0, ember#1.0.0 as dependants
    3) jquery#>= 2.0.0 which resolved to 2.0.3 and has foundation#5.0.2 as dependants

Prefix the choice with ! to persist it to bower.json

[?] Answer:
```