Update Modernizr build to add Geolocation API test.

Debt Advice Locator uses Modernizr.geolocation, so we'll add it.
Bump version to 3.2.0.

Modernizr build change introduces backwards-compatible changes, so increment minor version.
Merge pull request #186 from moneyadviceservice/add_modernizr_geolocation_test

Update Modernizr build to add Geolocation API test.