added info about the response XPath
added info about the response XPath

rtrepo/savon,advishnuprasad/savon,mpangrazzi/savon,payfriendz/savon,kimptoc/Savon-with-username-token-digest,zerobatu/savon,Eric-Guo/savon,billr578/savon,enahum/savon,viniciusnz/savon,savonrb/savon,travis-repos/savon,BlaneCordes/savon_vertex,latortuga/savon,SICSoftwareGmbH/savon,oafridi/savon