Added some text about WSN connectivity applet, made a "floating" box listing the tools available, so that it's easier to find them all.
Added some text about WSN connectivity applet, made a "floating" box
listing the tools available, so that it's easier to find them all.

nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome,nmc-probe/emulab-nome