Add 4.0 migration guide
Update docs links replacing BandyerSDK with KaleyraVideoSDK
Fix broken sample app links
Fix broken documentation links
Update objc sample app URLs
Update swift sample app url
Update Wiki and repo urls
Update homepage adding 4.0.0-alpha.1 release
Update requirements guide adding 4.0 alpha version
Update documentation links
Update requirements page adding 3.12.1 release
Update Home page adding 3.12.1 release
Update requirements page adding 3.12.0 release
Update home page adding 3.12.0 release
Update requirements page for 3.11.1 version
Update readme adding 3.11.1 version
Fix spacing
Update sidebar adding features page
Add Features page
Updated _Sidebar (markdown)
Updated MigrationGuide from 2.x to 3.0.0 (markdown)
Updated Call rating (markdown)
Updated Call from URL (markdown)
Updated CallKit (markdown)
Updated Custom Formatters (markdown)
Updated Customizing user information (markdown)
Updated UI Customization (markdown)
Updated In app notifications (markdown)
Updated VOIP notifications (markdown)
Updated Opening Chat (markdown)