This is solving whisper install idempotency

Previously "creates" attribute of "install whisper" execute resource
was pointint to a completely different path than to which --install-lib switch
is pointing to thus breaking "install whisper" execute resource's
idempotency. This is now fixed with this patch.
Merge pull request #84 from milosgajdos83/whisper-idempotency

This is solving whisper install idempotency