- Changed Listener handling to asynchronious handling

+ New: AuthenticationFactory for awaitatble getting of fully initalized SpotifyWebApi
- Changed demo-app to usage of AuthenticationFactory

.gitignore

@@ -1,112 +1,5 @@
-# Build Folders (you can keep bin if you'd like, to store dlls and pdbs)
-[Bb]in/
-[Oo]bj/
+################################################################################
+# Diese .gitignore-Datei wurde von Microsoft(R) Visual Studio automatisch erstellt.
+################################################################################
 
-# mstest test results
-TestResults
-
-## Ignore Visual Studio temporary files, build results, and
-## files generated by popular Visual Studio add-ons.
-
-# User-specific files
-*.suo
-*.user
-*.sln.docstates
-
-# Build results
-[Dd]ebug/
-[Rr]elease/
-x64/
-*_i.c
-*_p.c
-*.ilk
-*.meta
-*.obj
-*.pch
-*.pdb
-*.pgc
-*.pgd
-*.rsp
-*.sbr
-*.tlb
-*.tli
-*.tlh
-*.tmp
-*.log
-*.vspscc
-*.vssscc
-.builds
-
-# Visual C++ cache files
-ipch/
-*.aps
-*.ncb
-*.opensdf
-*.sdf
-
-# Visual Studio profiler
-*.psess
-*.vsp
-*.vspx
-
-# Guidance Automation Toolkit
-*.gpState
-
-# ReSharper is a .NET coding add-in
-_ReSharper*
-
-# NCrunch
-*.ncrunch*
-.*crunch*.local.xml
-
-# Installshield output folder 
-[Ee]xpress
-
-# DocProject is a documentation generator add-in
-DocProject/buildhelp/
-DocProject/Help/*.HxT
-DocProject/Help/*.HxC
-DocProject/Help/*.hhc
-DocProject/Help/*.hhk
-DocProject/Help/*.hhp
-DocProject/Help/Html2
-DocProject/Help/html
-
-# Click-Once directory
-publish
-
-# Publish Web Output
-*.Publish.xml
-
-# NuGet Packages Directory
-packages
-
-# Windows Azure Build Output
-csx
-*.build.csdef
-
-# Windows Store app package directory
-AppPackages/
-
-# Others
-[Bb]in
-[Oo]bj
-sql
-TestResults
-[Tt]est[Rr]esult*
-*.Cache
-ClientBin
-[Ss]tyle[Cc]op.*
-~$*
-*.dbmdl
-Generated_Code #added for RIA/Silverlight projects
-
-# Backup & report files from converting an old project file to a newer
-# Visual Studio version. Backup files are not needed, because we have git ;-)
-_UpgradeReport_Files/
-Backup*/
-UpgradeLog*.XML
-
-# NuGet
-/packages/
-*.nupkg
+/SpotifyAPI.Example/bin/Debug