* Use code snippets from managed identity credential samples in identity readme doc.
* Generate readme from snippets.
* Update snippet generation script to remove unnecessary indentation and extra new line at eof.
* Update Snippet Generation doc to show a concrete example on how to run it.
* Update other repo READMEs with the generation fixes.
* Fix KeyVault Secrets sample and use the snippets in its README
* Use the added sample snippet.
* First cut at snippet generation - markdown files only for now.
* Removed trailing blank lines in updated file
* Use snippet generator for keyvault snippets
