Initialize GLOG properly

[ChristopherHogan]

Created from JIRA HERM-55

We currently use it uninitialized so output goes to stdout.

[gheber]

Ensure that error logging is properly configured out-of-the-box (see #98) FLAGS_log_dir = "PATH_TO_LOG"; (by user or getcwd)
FLAGS_v = 2;
google::InitGoogleLogging(argv[0]);

Have them in function InitHermes?