Create .devfiles in all Example applications

[ALRubinger]

To support opening in Che.

Must be coordinated with the runtime teams and placed in the root of all applications that are part of the example catalog. Else we may lay this on top of those repos before returning the baked result to the user, which may be more centralized and efficient.

[ALRubinger]

Defined by https://github.com/fabric8-launcher/launcher-creator-welcome-app/issues/67

[ALRubinger]

This is also tracked with greater detail in #94 , though there it makes mention of a Chefile.

[wtrocki]

In AeroGear we are using Factories. It simply requires .factory.json file to exist in root repository that contains definition of the stack. This is really powerful and fast way to lauch entire codeready/che workspace. Example: https://github.com/aerogear/ionic-showcase/blob/master/.factory.json