startProfiling and stopProfiling should agree on the default name

[bpytlik]

In v8-profiler.js it seems like startProfiling sets the default name to be

name = 'org.nodejs.profiles.cpu.user-initiated.' + (cpuCache.length + 1);

Meanwhile, stopProfiling sets the default name to be ''.

It seems like those should be consistent. I'm still wrapping my head around how everything fits together though, so please correct me if I'm confused.

[bpytlik]

I think the above is especially true given the implementation in profiler.js where profiler.startProfiling and profiler.stopProfiling are both called without arguments. Fixing issue #52 might resolve this issue.

[c4milo]

I'm not sure I understand the issue you are trying to solve.