Fixes exception with the Count operation

If options was not present, it was trying to use options as callback. It simply
checks if options was passed in or not and initializes options to {}.

Resolves mccormicka/Mockgoose#48
Merge branch 'nukulb/count-fix' of https://github.com/hubba/Mockgoose into hubba-nukulb/count-fix
tried adding tests but they pass without the fix
Merge branch 'master' into hubba-nukulb/count-fix-local
removing iit