Merge pull request #20 from yura-yaroshevich/develop

Fixed strange hang of crash sending on Win8.
HockeySDKPCL optimizations for streamhandling
Methods for unity integration in PCL and WP8
Bugfixes and optimizations for WP8, WPF
WinRT81 custom ExceptionLogic configurable to control app-exit after unhandled exception
nuget bcl update and nuspec changes
added missing extension methods for win8.1 for custom UnhandledException logic
Fix bug for WinRT leading to crash on startup
Added HockeyClient.OnHockeySDKInternalException Event for "swallowed" Exceptions caused by SDK code
Started adding xml-comments to model classes and enabled xml-comment-generation in projects
Handle missing Internetconnection for Authorization in WP8 and WinRT
ExceptionHandling on fetching AppVersions
Project Readmes updated
Lots of xml comments
sandcastlehelpfilebuilder solution
WPF SDK: Implemented i18n and fixes/optimizations (sync write etc.)
WP8 SDK comments
WP81.SDK Fix for authentication-token handling (login page was always shown, because token was not correctly saved and handled)
WPF.SDK Optimizations for UpdateManager
Updated Readmes and Versions
fixed some XML comments
Version update and documentation fixes
Added _NamespaceDocs
Set version to 2.2.0
#22: Added culture information to CrashLogInformation.