Merge pull request #27 from Lex-2008/master

use template for all_posts.html page title
Merge pull request #28 from Lex-2008/relative-urls

Use relative URLs for links between pages
Merge pull request #30 from Lex-2008/master

small fixes
changed author email
update author name
Refactored get_post_title and is_boilerplate_file
Added tag support
Added tag support
link to blog
New "all tags" index page
Merge branch 'master' of github.com:cfenollosa/bashblog
all_tags needs to be called after rebuild_tags
Rewording of usage()