readme: added omniscale mentioning and route optimization in api section
readme: added omniscale mentioning and route optimization in api section

PGWelch/graphhopper,ratrun/graphhopper,prembasumatary/graphhopper,kalvish/graphhopper,Kwangseob/graphhopper,devemux86/graphhopper,ratrun/graphhopper,ratrun/graphhopper,Ranjan101/graphhopper,graphhopper/graphhopper,seeebiii/graphhopper,devemux86/graphhopper,ammagamma/graphhopper,mmalfertheiner/graphhopper,fbonzon/graphhopper,joh12041/graphhopper,seeebiii/graphhopper,routexl/graphhopper,seeebiii/graphhopper,PGWelch/graphhopper,Kwangseob/graphhopper,prembasumatary/graphhopper,CEPFU/graphhopper,HelgeKrueger/graphhopper,mmalfertheiner/graphhopper,komoot/graphhopper,Ranjan101/graphhopper,boldtrn/graphhopper,don-philipe/graphhopper,CEPFU/graphhopper,komoot/graphhopper,tobias74/graphhopper,HelgeKrueger/graphhopper,bendavidson/graphhopper,tlatt/graphhopper,hguerrero/graphhopper,routexl/graphhopper,ammagamma/graphhopper,bendavidson/graphhopper,routexl/graphhopper,hguerrero/graphhopper,don-philipe/graphhopper,hguerrero/graphhopper,joh12041/graphhopper,komoot/graphhopper,PGWelch/graphhopper,HelgeKrueger/graphhopper,boldtrn/graphhopper,devemux86/graphhopper,joh12041/graphhopper,komoot/graphhopper,tlatt/graphhopper,seeebiii/graphhopper,prembasumatary/graphhopper,joh12041/graphhopper,devemux86/graphhopper,Kwangseob/graphhopper,kalvish/graphhopper,tobias74/graphhopper,bendavidson/graphhopper,PGWelch/graphhopper,routexl/graphhopper,graphhopper/graphhopper,ammagamma/graphhopper,tlatt/graphhopper,Kwangseob/graphhopper,CEPFU/graphhopper,Ranjan101/graphhopper,kalvish/graphhopper,hguerrero/graphhopper,bendavidson/graphhopper,boldtrn/graphhopper,fbonzon/graphhopper,don-philipe/graphhopper,mmalfertheiner/graphhopper,CEPFU/graphhopper,graphhopper/graphhopper,prembasumatary/graphhopper,fbonzon/graphhopper,graphhopper/graphhopper,ratrun/graphhopper,ammagamma/graphhopper,Ranjan101/graphhopper,kalvish/graphhopper,mmalfertheiner/graphhopper,fbonzon/graphhopper,boldtrn/graphhopper,tobias74/graphhopper,tlatt/graphhopper,tobias74/graphhopper,HelgeKrueger/graphhopper,don-philipe/graphhopper