Create zipFastener.r

This isn't clever R trickery, it's an example of how and why R's vector capabilities make it a great numerical programming language. This is the 1 line reducto for the hideously convoluted (C-esque) example here: http://ryouready.wordpress.com/2009/03/27/r-zip-fastener-for-two-data-frames-combining-rows-or-columns-of-two-dataframes-in-an-alternating-manner/