Responsive Web Design Feature

Adding RWD feature using media query
Fix minor bugs

- Delete Top Gap
Add mink.html

move the links from Nav Bar into another page and add a link below the
CCSF logo.
Note: this is only experiment on the index.html page and the link will
be modified in the upcoming update
Merge pull request #24 from otangdec/RWD

Responsive Web Design Features Version 1