At the moment, the sync service is not mentioned anywhere on aerogear.org. We should add it to the following places:

1. on the landing page, add sync to `AeroGear Services` section, and add it to `AeroGear SDKs` section
2. Add it to the `Mobile Services` dropdown at the top of the landing page, create a new service page for data sync and link it to the item in this dropdown
3. Update the mobile sdks page to add data sync there.