add debian info in readme
setup.py
make installation on debian straightforward:
- reorganized README (two dependecies section: Debian, Arch)
- removed dependecy for `realpath` (not a core package in Debian)
- added elasticsearch bin path for Debian based distro (no more symlink needed)

welcome to all debian users ;)
Merge pull request #2 from ael-code/master

make installation on debian straightforward:
FIX missing files from templates
better run_all_dev