Add example: same output that ford_fulkerson pre 1.9 with the new interface.
Add example: same output that ford_fulkerson pre 1.9 with the new interface.

debsankha/networkx,dmoliveira/networkx,andnovar/networkx,yashu-seth/networkx,NvanAdrichem/networkx,jni/networkx,jakevdp/networkx,harlowja/networkx,dhimmel/networkx,kernc/networkx,ghdk/networkx,jni/networkx,ionanrozenfeld/networkx,cmtm/networkx,sharifulgeo/networkx,blublud/networkx,dhimmel/networkx,harlowja/networkx,bzero/networkx,michaelpacer/networkx,dmoliveira/networkx,aureooms/networkx,nathania/networkx,dmoliveira/networkx,Sixshaman/networkx,aureooms/networkx,nathania/networkx,JamesClough/networkx,jakevdp/networkx,goulu/networkx,ghdk/networkx,nathania/networkx,jfinkels/networkx,bzero/networkx,ionanrozenfeld/networkx,wasade/networkx,farhaanbukhsh/networkx,farhaanbukhsh/networkx,kernc/networkx,ionanrozenfeld/networkx,debsankha/networkx,blublud/networkx,tmilicic/networkx,OrkoHunter/networkx,kernc/networkx,RMKD/networkx,beni55/networkx,sharifulgeo/networkx,jakevdp/networkx,SanketDG/networkx,ghdk/networkx,ltiao/networkx,debsankha/networkx,jcurbelo/networkx,bzero/networkx,aureooms/networkx,blublud/networkx,chrisnatali/networkx,chrisnatali/networkx,sharifulgeo/networkx,farhaanbukhsh/networkx,RMKD/networkx,RMKD/networkx,jni/networkx,chrisnatali/networkx,dhimmel/networkx,harlowja/networkx