Wrong generation when package not set

[kilimnik]

The protobuf specs allow to not specify a package. Your generator assumes that a package is always defined.
e.g. there is this line of code in the grpc web generator serviceName: "${fileDesc.package}.${serviceDesc.name}", No matter the package it always puts a dot in front of the service name. This doen't work when dealing with an empty package name as the service name would be .ExampleService.

[stephenh]

Should be out in the next release, thanks!