Directory parameter extension - Path Template

[kdybicz]

• Introducing output directory extension using Path Template
• Splitting tests groups into separate ones
• Upgrading ava dependency to 0.18.2
• Updating configtest (in progress)
• Updating README.md (in progress)

[ysugimoto]

Currenty I think it is better, thanks.

[kdybicz]

It looks like we are ready for final review. Let me know if you have any comments.

[ysugimoto]

Looks good, let's merge this and close #114

[kdybicz]

I will prepare for merging. As for #114 I would like to introduce it as alternative to directory and template, as third, even more advanced option. But I would like to do that later, so if you are ok, I would like to leave #114 open for now.

[ysugimoto]

It's OK.