Add title, author and license metadata to epub version

Makes it possible for various applications and services to extract
the title and author of The CryptoParty Handbook.
Merge pull request #83 from michenriksen/master

Title, author, language and license in epub metadata
Remove redundant word in Chapter 00
Merge pull request #103 from mdimitrova/master

Remove redundant word in Chapter 00
use markdown syntax for preformatted blocks
Merge pull request #104 from haneefmubarak/patch-1

use markdown syntax for preformatted blocks
Fix minor typos and add missing words
Merge pull request #105 from eightytwo/master

Fix minor typos and add missing words
Add Github migration, packaging and maintenance credits
Add Arch Linux dependencies
Add Travis CI integration
Add missing BeautifulSoup dependency
Fix a few headers in glossary
Merge pull request #108 from mdimitrova/master

Fix a few headers in glossary
Add a link to the Tails website
Fix Tails link
Merge remote-tracking branch 'upstream/master'