Revert "Use SVG for status badges in README"
Revert "Use SVG for status badges in README"

This reverts commit d1be2150f098abdb261b0cd752499c582b1f4262 because the badge
for travis doesn't show up correctly.

bonekost/kaminari,peter-umb/umbie_kaminari,kaminari/kaminari,fkagami/kaminari,mperrando/kaminari,parity/kaminari,thiagorp/kaminari,sendgrid/kaminari,jiamaozheng/kaminari,yui-knk/kaminari,yui-knk/kaminari,dblock/kaminari,JuanitoFatas/kaminari,pat/kaminari,antstorm/kaminari,Teino1978-Corp/Teino1978-Corp-kaminari,varvet/kaminari,thiagorp/kaminari,Zhomart/kaminari,iberianpig/kaminari,sachin21/kaminari,mrhead/kaminari,jcoyne/kaminari,joe1chen/kaminari,guodongme/kaminari,jiamaozheng/kaminari,epicagency/kaminari,sendgrid/kaminari,royels/kaminari,sachin21/kaminari,plribeiro3000/kaminari,sr-education/kaminari,Boomkat/kaminari,peter-umb/umbie_kaminari,joe1chen/kaminari,mrstif/cursor,Teino1978-Corp/Teino1978-Corp-kaminari,sr-education/kaminari,plribeiro3000/kaminari,barkbox/cursor,bsboris/kaminari,parity/kaminari,sideci-sample/sideci-sample-kaminari,iberianpig/kaminari,antstorm/kaminari,danimashu/kaminari,sanrodari/kaminari,amatsuda/kaminari,aelogica/kaminari,amatsuda/kaminari,dblock/kaminari,mrhead/kaminari,aelogica/kaminari,onursarikaya/kaminari,bsboris/kaminari,danimashu/kaminari,Zhomart/kaminari,sanrodari/kaminari,bonekost/kaminari,guodongme/kaminari,pat/kaminari,mperrando/kaminari,varvet/kaminari,kaminari/kaminari,onursarikaya/kaminari,epicagency/kaminari,wkirschbaum/kaminari,sendgrid/kaminari,JuanitoFatas/kaminari,wkirschbaum/kaminari,royels/kaminari,Boomkat/kaminari