Please answer these questions before submitting your issue.

What version of gRPC are you using?

Latest

What did you expect to see?

• each example should have a README file which a user can read to understand the example.
• an extensible, consistent and logical directory hierarchy for the examples. I think the current directory structure can be enhanced to make it more user friendly
• improved documentation: better content, links, fixed typos/grammar
• dependency on released version: the current master (SNAPSHOT) version of examples depends on master (SNAPSHOT) version of the grpc library. Can we change it to depend on the latest released grpc version so the user who just wants to build examples doesn't need to build the grpc library?