Linewraps at 80 where markdown syntax allows.
Bumps the number of dependants to 1700.
Rephrases, since Colors is no longer the most popular string styling module.

See: http://npm-stat.com/charts.html?package=chalk versus
http://npm-stat.com/charts.html?package=colors
Adds code tags around String.prototype.
Removes $ prefix from shell command, to allow for syntax highlighting.
Removes console.log to simplify the example, and place the nested example on several lines.
Minor rephrasing.
Adds a section on 256-colors.

Closes #35.
References #44.