added Interoute/index.md file. In contain test text.
added Interoute/index.md file. In contain test text.

michelleN/docs,iankronquist/docs,endocode/coreos-docs,mischief/coreos-docs,mjg59/docs,coreos/docs,jonboulle/docs,joshix/docs,ksmaheshkumar/docs-2,robszumski/docs,atxwebs/docs,hkjn/docs-1,wli6/docs,bq-xiao/docs,marineam/coreos-docs,ionave/docs,skynet/docs,jdloft/docs