Clarify the readme?

[SpencerGreene]

I tried to install the dotnet example using:

install -u https://github.com/serverless/examples/tree/master/aws-dotnet-rest-api-with-dynamodb -n dotnet_example

but it responds with:

Serverless Error ---------------------------------------

serverless.yml not found in .../dotnet_example

So I think the "-n my-project" in the README is perhaps not what is actually needed here?