Updated Recursive Implementations.
Updated Recursive Implementations.

Updated the two recursive implementations to demonstrate different
ways of handling recursion. As well as different ways of dealing with
the use of the cons function.

Improved the description of the error handling in the first buzz function.

bsmr-erlang/lfe,bsmr-erlang/lfe,jjl/lfe,jjl/lfe,yurrriq/lfe,oubiwann/lfe,arpunk/lfe,yurrriq/lfe,oubiwann/lfe,arpunk/lfe