Provide a function to update project and app versions from the sinan commandline.

[ericbmerritt]

Provide a function that will update the version of the project and another
that will update the version of specific apps within the project.
Something to the effect up

sinan vup <major|minor|patch>
to update the project version and

sinan vup <major|minor|patch>
to update the version of an application

For strange version strings this would not be expected to work but for
things matching [0-9]+[.-][0-9][.-][0-9]([-][a-zA-Z]+)? it should be
made to work.