Simple copy & paste issue for hacktoberfest.

• Copy appveyor.bat from https://raw.githubusercontent.com/php-api-clients/hydrator/master/appveyor.bat
• Copy contents from https://raw.githubusercontent.com/WyriHaximus/php-cpu-core-detector/master/appveyor.yml into appveyor.yml and remove the PHP 5.6 entries.

The easiest way to do this is to edit the appveyor.yml file in this repo and create a pull request. Then go back to your fork and then use the Create new file button in the right just above the file listing.

I think you should think about naming conventions:

1. When namespace should be in singular and when in plural form.
2. Use or not smurf naming convention.

ad. 1. For example in Hydrator you have plural Annotations namespace which contains many annotations (as the namespace name impies) but then you have singular Handler namespace which contains many handlers.

IMHO if namespace contains collection of classes of shared type then name should be plural e.g ApiClients is plural because it contains many api clients. If namespace contains parts of something and each part represent something else then name should be singular e.g CommandBus in Github is singular because it doesn't contains many command busses but Command and Handler namespaces.

ad. 2. For example in Hydrator namespace Annotations contains annotations without Annotation suffix but then you have Handler namespace which contains handlers with Handler suffix.

IMHO this is a matter of debate.

Are there any plans for tagging versions? It would help in writing 3rd party clients.