Document that Matomo can measure Mobile apps (Mobile app analytics)

[mattab]

The goal of this issue is to make it clear that Piwik lets you measure Mobile Apps built on iOS, Android and Titanium.

proposed by @tzi

It's difficult to know currently if Piwik tracks mobile apps. Steps to improve:

• [ ] Create new user guide "Tracking Mobile Applications" which lists the possibilities, via SDK (Android, iOS and Titanium SDK) which are currently hidden in http://piwik.org/integrate/ and http://piwik.org/docs/tracking-api/
• [ ] the Mobile page only talks about piwik mobile, but people may search for piwik mobile looking for mobile analytics. we could add a "Tracking Mobile Application" text or box, for the lost users
• [ ] link to "Tracking Mobile Application" from the blog posts and FAQs:
  • http://piwik.org/blog/2012/04/how-to-use-piwik-to-track-mobile-apps-activity-clicks-phones-errors-etc/
  • http://piwik.org/blog/2013/10/mobile-analytics-sdk-beta-release-of-piwik-ios-sdk/
  • https://piwik.org/blog/2013/10/mobile-analytics-sdk-beta-release-of-piwik-ios-sdk/
• [ ] write a little blog post about the new Android SDK, and link to this page.
• [ ] could we somehow link to the SDKs from the Tracking code page ?

[mattab]

this was done in https://developer.matomo.org/guides/tracking-api-clients