Modify some cyan colors for the light theme
Fix bug in `alect-substitute-colors-in-plist'

Use consp instead of listp, otherwise an "infinite" recursion may occur
as (listp nil) returns t.
Ignore "temp" directory
Add support for class of terminals
Add definition of auxiliary faces
Update README for class of terminals
Update README

1. Add table of contents.
2. Move "History" section to the bottom.
3. Improve "Emacs 24.3.1 and earlier" section.
Update version (0.4) and package commentary