added some additional information to the readme
added some additional information to the readme

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zerobatu/savon,BlaneCordes/savon_vertex,billr578/savon,advishnuprasad/savon,mpangrazzi/savon,rtrepo/savon,Eric-Guo/savon,enahum/savon,savonrb/savon,latortuga/savon,oafridi/savon,SICSoftwareGmbH/savon