Adds auto variables and made rm failsafe

Variables are now used for username and email and auto populated with
values from original repos (using git config --get)
README.md removal doesn't fail anymore if the file doesn't exist.
If git doesn't return config values, previous defaults are used.

Debug messages now output deployed version (including tag).
Merge pull request #3 from leucos/values_from_git

Adds auto variables and made rm failsafe