Recommend static directory structure for easy deployment

[nikochiko]

Currently, user has to make too many changes to the configuration we provide (edit inside the files) and rename directories from X to Y.
The recommended installation installs in /home/$user directory.

The recommended installation should be in a directory like /etc/ or /var/ which won't change across installations.

Maybe, a good directory structure could be like this:

/etc/hamr/
|__ apps/
|__ |__ app1/wsgi.py
|__ |__ app2/wsgi.py
|__ code/
|__ |__ LICENSE
|__ |__ hamr/
|__ |__ |__ __init__.py
|__ |__ |__ api.py
|__ config.yml
|__ hamr.cgi
|__ hamr.conf  # apache

This looks clean and puts the mess of code into one directory. But this also adds instructions for users to move out the config.yml and hamr.cgi from the root of repository.

Maybe, we can structure the repo so that the user just needs to clone the repo into /etc/, symlink apache configuration, enable mods and the site, and then it just works.