Update documentation and formatting.  Addresses #311
Update documentation and formatting.  Addresses #311

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extra : convert_revision : svn%3A3ed01bd8-26fb-0310-9e4c-ca1a4053419f/networkx/trunk%401563

ltiao/networkx,chrisnatali/networkx,nathania/networkx,cmtm/networkx,debsankha/networkx,nathania/networkx,jni/networkx,SanketDG/networkx,ionanrozenfeld/networkx,OrkoHunter/networkx,kernc/networkx,ionanrozenfeld/networkx,bzero/networkx,dmoliveira/networkx,kai5263499/networkx,blublud/networkx,aureooms/networkx,RMKD/networkx,kernc/networkx,harlowja/networkx,RMKD/networkx,aureooms/networkx,ghdk/networkx,kai5263499/networkx,jakevdp/networkx,dmoliveira/networkx,sharifulgeo/networkx,farhaanbukhsh/networkx,sharifulgeo/networkx,jtorrents/networkx,jni/networkx,sharifulgeo/networkx,dmoliveira/networkx,dhimmel/networkx,harlowja/networkx,jakevdp/networkx,jni/networkx,jtorrents/networkx,JamesClough/networkx,chrisnatali/networkx,NvanAdrichem/networkx,farhaanbukhsh/networkx,jfinkels/networkx,bzero/networkx,harlowja/networkx,goulu/networkx,wasade/networkx,chrisnatali/networkx,jakevdp/networkx,yashu-seth/networkx,dhimmel/networkx,ionanrozenfeld/networkx,Sixshaman/networkx,farhaanbukhsh/networkx,ghdk/networkx,jcurbelo/networkx,dhimmel/networkx,ghdk/networkx,andnovar/networkx,debsankha/networkx,blublud/networkx,michaelpacer/networkx,kai5263499/networkx,kernc/networkx,RMKD/networkx,tmilicic/networkx,bzero/networkx,aureooms/networkx,beni55/networkx,nathania/networkx,blublud/networkx,debsankha/networkx