add Response.finish() to indicate a message is "handled"
add Response.finish() to indicate a message is "handled"

* Message now has a @done attribute you can check
* Message and Response both have a finish() method to stop execution
* Addresses #200

Pull Request: master

makii42/hubot,alexchenfeng/hubot,andrewpong/awp-hubot,daudich/hubot,alucardzhou/hubot,PopExpert/hubot,CobyR/hubot,fgbreel/hubot,danielcompton/hubot,lisb/hubot,hellosa/hubot,jasonrhodes/botzero,alexchenfeng/hubot,kristenmills/hubot,pchaigno/hubot,jschell/hubot,hubotio/hubot,Arthraim/merlin,julianromera/hubot,rafaell-lycan/Hubot-X9,markstory/hubot,ToriTomyuTomyu/nothing-yet,Mattlk13/Hubot,gregkare/hubot,mujiansu/hubot,plated/hubot,krahman/hubot,jianchen2580/hubot,alex-zhang/hubot,geoffreyanderson/hubot,charliemurphy07/Hubot,alexchenfeng/hubot,lisb/hubot,hubotio/hubot,wyncode/hubot,alexchenfeng/hubot,joshsobota/hubot,mauricionr/hubot,lizardpie/hubot,ykelvis/hubot,limianwang/hubot,dopeboy/hubot,bgranberry/hubot,rlugojr/hubot,zvelo/hubot,PropertyUX/nubot,shinvdu/hubot,eetuuuu/hubot,broccolini/hubot,mcifani/dog-yoda,vkhang55/hubot,hcxiong/hubot,ajayanandgit/hubot,michaelansel/hubot,tiagochiavericosta/hubot,markstory/hubot,mchill/hubot,eshamow/gutterbot,WaleedAshraf/hubot,voltsdigital/hubot,lizardpie/hubot,alexchenfeng/hubot,AlexandrPuryshev/hubot,poppingtonic/hubot,mutewinter/hubot,mrb/hubot,RavenB/hubot,nakaearth/myhubot,lukw00/hubot,Snorlock/hubot,cycomachead/hubot,Hartmarken/hubot,will/willbot,mcanthony/hubot,rileytg/chenbot,PropertyUX/nubot,jaketrent/moneypenny,ouadie-lahdioui/hubot,yujiroarai/hws-hubot,davidkassa/hubot,scboucher/hubot,mjurczyk/hubot,aslihandincer/hubot,sharabash/hubot,nandub/hubot,awbauer/hubot,kyleconroy/karmabot,RiddickSky/hubot,imkmf/bhamruby-hubot,howprice/hubot,mcifani/dog-yoda,wieden-kennedy/hubot,hotrannam/hubot,decaffeinate-examples/hubot,rmdelo/appboy-hubot,imkmf/bhamruby-hubot,cameronmcefee/hubot,ykusumi/test-hubot,will/willbot,blackwellops/hubot,melexis/melexis-hubot,ddmng/brazil82-hubot,iDTLabssl/hubot,bradparks/hubot__github_chat_bot,PopExpert/hubot,b3nj4m/hubot,SIOPCO/hubot,codydaig/hubot,broccolini/hubot,leohmoraes/hubot,github/hubot,decaffeinate-examples/hubot,armilam/lessonly-bort,lisb/hubot,ooohiroyukiooo/hubot,chadfurman/hubot,rileytg/chenbot,doudoupower/hubot,brodul/hubot,rayatbuzzfeed/hubot,fstehle/hubot,Drooids/hubot,minted/hubot,yyolk/glitchby,yyolk/glitchby,kevinsawicki/hubot,craig5/hubot,msound/hubot,keyvanakbary/hubot,scboucher/hubot,sdimkov/hubot,edorsey/hubot,kkirsche/hubot,ClaudeBot/hubot,skcript/skubot,github/hubot,nandub/hubot,ajschex/hubot,ToriTomyuTomyu/nothing-yet,jaketrent/moneypenny,taojuntjpp/hubot,GrimDerp/hubot,andrewpong/awp-hubot,kgrz/hubot,jasonkarns/hubot