Fix for zero duration in tests - Closes #12 and bumping version for new ...

### Fix
-  #12 : zero duration in individual scenarios

### Change
- Bumping version for new gem release

### Testing
- Verified locally for `scenario` and `scenario_outline` 
- One caveat is that if `feature` contains only one `scenario` then duration of the `feature` will be slightly more (~.5  seconds) than `scenario` duration. I will analyze this check what improvements can be made in future  

@smecsia - Please review and let me know if it is good to merge