Update README and setup
Preparing release 1.0
Back to development: 1.0.1
Update README.rst
Add Docker files structure
Add Makefile for common operations
Enable Docker build and describe usage
Merge pull request #29 from makinacorpus/add_docker_file

Add Docker script for one-line command deployment
Add link to travis on badge image
Add {X_FORWARDED_FOR} placeholder.

It avoids the client initiating the request to be aware of its own address.
Exemple:
    curl "http://convertit/?url=http://{X_FORWARDED_FOR}/document.odt&to=application/pdf"

Fix #30
Specify language headers during download
Use original request headers to specify download language
Add User-Agent to the list of transmitted headers
Fix headers filtering
Preparing release 1.1.0
Back to development: 1.1.1