added spec for specifying the SOAP request body as a String
added spec for specifying the SOAP request body as a String

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