Show values on bar chart
Show values on bar chart

This patch shows values on each bar by appending text nodes to bars. Values will appear if global variable showValues is true. For better control it should be made a config option.

Second change is about shouldShowTickText function. It returns always true, because when using axis:x:categories, I wish all axis values to appear.
Seikho/c3,azurelogic/c3,aareth/c3,pivotaltracker/c3,aendrew/c3,naver/billboard.js,bhuvan-ganesan/c3,Kreozot/c3,brosnanyuen/c3,elancom/c3,pengleelove/c3,pxzhenren/c3,iddar/c3,MarcBT/c3,900k/c3,postrational/c3,elancom/c3,getconnect/c3,bartvde/c3,bouk/c3,RobertoMalatesta/c3,naver/billboard.js,gdseller/c3,Seikho/c3,GordonSmith/c3,abhas9/c3,taylorhxu/c3,kkirsche/c3,alanhamlett/c3,gorcz/c3,naver/billboard.js,alanhamlett/c3,GerHobbelt/c3,santoshsahoo/c3,tareq-s/c3,c3js/c3,missingdays/c3,mwilkows/c3,MarkHarper/c3,antoniodesouza/c3,brosnanyuen/c3,rknoll/c3,Optibus/c3,Kreozot/c3,gdseller/c3,kt3k/c3,mwilkows/c3,alanhamlett/c3,parthapal33/c3,getconnect/c3,aendrew/c3,davidpoore/c3,pivotaltracker/c3,benjyblack/c3,bartvde/c3,luisbrito/c3,missingdays/c3,GeeSEun/c3,pengleelove/c3,MarcBT/c3,itsMagondu/c3,Optibus/c3,hds-lab/c3,abhas9/c3,hds-lab/c3,MarkHarper/c3,900k/c3,iddar/c3,antoniodesouza/c3,c3js/c3,itsMagondu/c3,aareth/c3,jacobmarshall/c3,masayuki0812/c3,luisbrito/c3,GordonSmith/c3,masayuki0812/c3,naver/billboard.js,davidpoore/c3,kaizenplatform/c3,misticini/c3,bhuvan-ganesan/c3,kkirsche/c3,aljachimiak/c3,rknoll/c3,benjyblack/c3,santoshsahoo/c3,WeaveTeam/c3,clarinete/c3,misticini/c3,aljachimiak/c3,WeaveTeam/c3,bouk/c3,GerHobbelt/c3,taylorhxu/c3,EspadaV8/c3,tareq-s/c3,GeeSEun/c3,pxzhenren/c3,postrational/c3,EspadaV8/c3,parthapal33/c3,jacobmarshall/c3,RobertoMalatesta/c3,gorcz/c3,clarinete/c3,c3js/c3,Aloomaio/c3,Aloomaio/c3,c3js/c3,brightroll/c3,azurelogic/c3,brightroll/c3