(TK-44) Improve wording in Webrouting description
(TK-44) Improve wording in Webrouting description

Improve the wording of the description of the Webrouting Service
in the main README file.

puppetlabs/trapperkeeper-webserver-jetty9,puppetlabs/trapperkeeper-webserver-jetty9,rlinehan/trapperkeeper-webserver-jetty9,nwolfe/trapperkeeper-webserver-jetty9,richardc/trapperkeeper-webserver-jetty9,rlinehan/trapperkeeper-webserver-jetty9,camlow325/trapperkeeper-webserver-jetty9,fpringvaldsen/trapperkeeper-webserver-jetty9,camlow325/trapperkeeper-webserver-jetty9,fpringvaldsen/trapperkeeper-webserver-jetty9,richardc/trapperkeeper-webserver-jetty9,nwolfe/trapperkeeper-webserver-jetty9