Include Build number in version

[machawk1]

Since the version number has stayed static for a few builds, it would be particularly useful for the app to include a build number appended to the version to indicate that a newer is available compared to one you have installed or one that a service is using.

[ibnesayeed]

Adding date-time and/or commit hash will rely on compile time variable which will make the build process complex. This can possibly be done more reliably by adding Makefile or something similar to the repository.