Call graph of server start with run

[gitbub1992]

Hi, I want to use go-callvis to get the call graph of pd server which starts with function Run().
Command like this:
go-callvis -focus="" -limit github.com/pingcap/pd/server -ignore github.com/pingcap/pd/vendor | dot -Tpng -o pd_server.png

Nothing I got but the usage, so what is the problem?

[ondrajz]

This issue is duplicate of: #36 closing it.
Related PR that will fix this: #39