initial commit
+ changed style and layout.
+ modified content to make it more readable.
+ border line added to each li
+ content sanitized.
+ references to other functions turned into anchors.
+ added missing rockets in anonymous function statements
added missing rockets in case statements
content modified with better explanations of examples for some of the functions
+ shortened text line lengths.
+ added missing links to other functions.
+ added edge case for List#reduce.