update to post template on twitter theme: added dynamic page description
added dynamic tagline to posts and conditional display statement on partial view
Fixed a malformed date in the sample post.
Fix that theme will not be overwritten if exists.

When some theme exists, "rake theme:install" will not overwrite the
previous theme files, even if we answer "y" to the "Do you want to
overwrite?" question. This commit fixes this.
Giving every post/page the "smarter" custom tagline (just like page.html in master branch).
P.S. In master branch, every page has "smarter"  custom tagline but every post haven't.
Update 'rake post' to support tags on command line
Update _config.yml

typo
Fixed a typo in _config.yml
Merge pull request #122 from awkerney/master

Typo Correction
Display current year via javascript
jekyll current time (when you run the jekyll command)
Merge pull request #123 from djoos/master

Display current year via javascript
Make it responsive out of the gate
Merge pull request #132 from jkuchta/master

Fully take advantage of bootstrap awesomeness but responsive
Merge pull request #74 from lzcabrera/post_update

Post update
Merge pull request #110 from lorensr/patch-1

Typo in _config.yml
Merge pull request #102 from techotaku/jb-development

Giving every post/page the "smarter" custom tagline
Fix merge conflict.
Merge pull request #77 from geon/master

20011 should be 2011 in the file structure tree.
Merge pull request #81 from xuhdev/fix-theme-install

Fix that theme will not be overwritten if exists.