Extract category_link filter from category_generator.rb plugin

Allows category_link to be used as a filter to display a link to
any category.
Added robots.txt, with sitemap link
To support url without domain name like /path/file

You need to know if you would like to support this, each word in the title can not start with "/".
Fixing English error pet-peeve.
Site updated at 2012-12-06 14:34:54 UTC
Source updated at 2012-12-06 14:43:17 UTC
Merge pull request #831 from parkr/english

Fixing English error pet-peeve.
Rakefile option for any additional rsync arguments

Added variable `rsync_args`
Merge branch 'source' of github.com:tonytonyjan/tonytonyjan.github.com into source
Source updated at 2012-12-12 05:32:33 UTC
Source updated at 2012-12-12 05:38:12 UTC
Source updated at 2012-12-12 05:47:31 UTC
Source updated at 2012-12-16 08:11:33 UTC
Source updated at 2012-12-16 08:15:22 UTC
gist tag plugin now works with the latest changes GitHub gists and does not fail if you do not specify a filename.
Merge pull request #824 from liangsun/patch-1

To support url without domain name like /path/file
Merge pull request #844 from jsvensson/rsyncargs

Rakefile option for any additional rsync arguments
Titles in code plugins can have slashes in them. Closes #892
Removed unnecessary regex in code block plugin
Merge pull request #408 from dtchepak/category_link_filter

Extract category_link filter from category_generator.rb plugin