Added ruby config to gitignore
Added page title.
Added main page part
Improved Lecture table
Added the threeecol css to the list
Added About page
Added a CSS for table formatting.
Included the three column CSS
Added a "site logo" in the form of a green TAU symbol.
Corrected reference to the TAU icon.
Changed and added colors.
Added data to the first "page".
Removed footer.
Edited the table.