Updating README.md to highlight the tool first, then the library. (#2)

* Updating README.md to highlight the tool first, then the library. Added links to the detail markdown for each. Added links to the dependent libraries.

README.md

@@ -1,6 +1,9 @@
-# CoseParser and CoseSignTool
-CoseParser is a library of functions for COSE signing and validation for use by .NET applications. CoseSignTool is a platform-agnostic command line application to COSE sign files and validate COSE signatures.
+# CoseSignTool and CoseParser
+CoseSignTool is a platform-agnostic command line application to COSE sign files and validate COSE signatures.
+
+CoseParser is a library of functions for COSE signing and validation for use by .NET applications. 
+
 ### Requirements
-CoseParser depends on System.Formats.Cbor version 7.0.0-preview.2.22115.7 and System.Security.Cryptography.Cose version 7.0.0-preview.2.22115.7 via NuGet package. Do not attempt to use later versions of either package as this will change the fundamental data structures it depends on.
+CoseSignTool depends only on CoseParser and [Microsoft.Extensions.Configuration.CommandLine](https://www.nuget.org/packages/Microsoft.Extensions.Configuration.CommandLine). It uses NuGet package version 7.0.0-preview.7.22375.6 but other versions may be compatible. See [CoseSignTool.md](https://github.com/microsoft/CoseSignTool/blob/main/CoseSignTool.md) for more details.
 
-CoseSignTool depends only on CoseParser and Microsoft.Extensions.Configuration.CommandLine. It uses NuGet package version 7.0.0-preview.7.22375.6 but other versions may be compatible.
+CoseParser depends on [System.Formats.Cbor](https://www.nuget.org/packages/System.Formats.Cbor/) version 7.0.0-preview.2.22115.7 and [System.Security.Cryptography.Cose](https://www.nuget.org/packages/System.Security.Cryptography.Cose) version 7.0.0-preview.2.22115.7 via NuGet package. Do not attempt to use later versions of either package as this will change the fundamental data structures it depends on. See [CoseParser.md](https://github.com/microsoft/CoseSignTool/blob/main/CoseParser.md) for more details.