Clarify DevNotes.txt
Clarify DevNotes.txt

I did my best to clean up the dev notes and make them more readable.  I
think there is still more work to do here - making contributing easy
for newcomers is important - but this is a step in the right direction.

tanxxjun321/XVim,squarefrog/XVim,hyperspacemark/XVim,scottsievert/XVim,kgoodier/XVim,weizhenwei/XVim,hmuronaka/XVim,antmd/XVim,xuebuhui52011/XVim,tkuichooseyou/XVim,tonyd256/XVim,teemobean/XVim,gecko655/XVim,brucehappy/XVim,hyperspacemark/XVim,scottsievert/XVim,xuebuhui52011/XVim,yixiang/XVim,dengcqw/XVim_x,xuebuhui52011/XVim,tkuichooseyou/XVim,liwangwang123/XVim,tkuichooseyou/XVim,weizhenwei/XVim,raimon49/XVim,Chenkaiang/XVim,tonyd256/XVim,tanxxjun321/XVim,otfsenter/XVim,antmd/XVim,kgoodier/XVim,antmd/XVim,yixiang/XVim,teemobean/XVim,yixiang/XVim,liwangwang123/XVim,hyperspacemark/XVim,sunzeboy/XVim,tonyd256/XVim,sunzeboy/XVim,thatchristoph/XVim,SampleLiao/XVim,kgoodier/XVim,XVimProject/XVim,hyperspacemark/XVim,Chenkaiang/XVim,lisuxia1992/XVim,lisuxia1992/XVim,SampleLiao/XVim,pebble8888/XVim,dengcqw/XVim_x,Chenkaiang/XVim,brucehappy/XVim,XVimProject/XVim,gecko655/XVim,ishkawa/XVim,N4tr0n/XVim,scottsievert/XVim,sunzeboy/XVim,N4tr0n/XVim,hmuronaka/XVim,thatchristoph/XVim,otfsenter/XVim,otfsenter/XVim,raimon49/XVim,sunzeboy/XVim,EmuxEvans/XVim,XVimProject/XVim,raimon49/XVim,gecko655/XVim,liwangwang123/XVim,EmuxEvans/XVim,EmuxEvans/XVim,brucehappy/XVim,dengcqw/XVim_x,dengcqw/XVim_x,EmuxEvans/XVim,squarefrog/XVim,N4tr0n/XVim,XVimProject/XVim,xuebuhui52011/XVim,brucehappy/XVim,tkuichooseyou/XVim,squarefrog/XVim,tanxxjun321/XVim,scottsievert/XVim,pebble8888/XVim,teemobean/XVim,tanxxjun321/XVim,gecko655/XVim,SampleLiao/XVim,squarefrog/XVim,thatchristoph/XVim,pebble8888/XVim,Chenkaiang/XVim,tonyd256/XVim,thatchristoph/XVim,ishkawa/XVim,liwangwang123/XVim,N4tr0n/XVim,kgoodier/XVim,pebble8888/XVim,lisuxia1992/XVim,hmuronaka/XVim,weizhenwei/XVim,SampleLiao/XVim,teemobean/XVim,ishkawa/XVim,ishkawa/XVim,lisuxia1992/XVim,weizhenwei/XVim,hmuronaka/XVim,yixiang/XVim,antmd/XVim,otfsenter/XVim,raimon49/XVim