obsolete the DeleteCollection method

fixes #73

For a more complete fix, we should remove this in some future
major revision.
Merge pull request #81 from jkling/ObsoleteDeleteCollection

obsolete the DeleteCollection method
Create 7.2.1 release
upgrade storage sdk to 2.1.0.4
update azure configuration sdk to 2.0.3
Merge pull request #83 from jkling/SDKUpdates

Two Azure SDK updates
Creating 7.2.2 release
Update nuget packages to Azure Storage 3.1.0.1
Update project/package.config for azure 3.1.0.1
Update test entity with attribute to denote partition/row key
Update test table name because '_' characters are no longer allowed
Force AtomPub formatting for table requests
No longer check in packages
Merge pull request #85 from dontjee/azureStorage3_1

Upgrade to Azure Storage SDK 3.1.0.1
Create 7.2.3 release