Add RefreshToken to the WebServer auth response

Uses the same pattern as the existing object fields, so the field will be present but empty if you make a request that does not include 'refresh_token' in the initial call's scope
Renamed templates to accelerators
Added Windows Phone 8 and Windows 8 accelerators
Updated QueryAsync<T> to expose and accept nextRecordUrl to enabling query result sets greater than 2000 records. Demonstrated usage in SimpleConsole.
Updated and revised accelerators
Updated accelerators with blog post URLs
Added NuGet for Web account sample
Merge branch 'master' of github.com:jadkisson/Force.com-Toolkit-for-NET into jadkisson-master
Resolved NuGet package references
Merged and updated QueryContinuationAsync logic
Merge branch 'jadkisson-master'
Updated Chatter NuGets to latest
Merge branch 'CaptureRefreshTokenFromWebServerResponse' of github.com:eli-precisionlender/Force.com-Toolkit-for-NET into eli-precisionlender-CaptureRefreshTokenFromWebServerResponse
Merged and updated code to add token refresh
Fixed property names for UpsertExternalAsync so that they accurately reflect their role
Updated all NuGet packages and pushed
Updating Mono.NET version for travis build
Adding new travis build process
Updating travis and project files to try and fix build references for travis ci
Fixed references in common unit tests project