regularize DESCRIPTION

per email from CRAN:

	Please also make sure that in your package DESCRIPTION file,

	* The Title field uses title case and does not end a period.  It should
		not repeat the package name, and should be on one line and preferably
		no more than 65 chars.

	* The Description field really give a comprehensive description of what
		the package does, and avoids redundancies such as "This package ..."
		or "An R package for ...".
add rlambdap

towards version bump to 0.1501
time deltas