Adding android nuspec

Revert "Disabling oauth1."

This reverts commit aa39c5f.

Conflicts:
	Release/src/http/oauth/oauth1.cpp

Version control tag for 2.1.0 release.

Remove comment that is out of date

Sync to TFS -- natvis update

merge from tfs for 1.4 release

Release 1.3.1

Fix project files

merge from tfs to codeplex

Release 1.1.0