Updated .gitignore

Updated .gitignore to ignore third party modules and less-generated .css
files
Initial project

Created a new express project, added support for less, and created
initial layout template.
Added styling for letter tiles
Wire up socket.io

New tiles are sent from the server every five seconds.
Added available tiles area
New tiles are positioned and rotated randomly
Letter score inferred by client
Server sends random letters
Tidied up css, made rotation work in IE
Added word area and text box (nonfunctional)