Creating a task that uploads all possible variants to HockeyApp

[jleidgens]

• A new task uploadToHockeyApp is defined that depends on all upload tasks
• If no AppId is supplied for a possible variant a message is printed instead of failing the gradle run

Fixes #65

[x2on]

Why shouldn't it throw a error if no appId is found?

[jleidgens]

Because if the build does not fail on a missing app id the task will only upload configured variants and ignore all variants that do not have an appId.

Maybe I can change it in a way that the error is still thrown if only one variant is uploaded.

[x2on]

I would suggest to throw if you upload one variant. If you run it with uploadAll I would only throw a error if no appId was matching. Make sense?

[jleidgens]

Yes I will try to add this tomorrow

[x2on]

Sounds great :)

[jleidgens]

I implemented this. It is not the nicest way to solve this but it works.

[x2on]

Thanks a lot for your PR