Remove ruby from readme
Remove ruby from readme

andrebellafronte/grunt-email-workflow,19peaches/grunt-email-workflow,LucasKA/mail-builder,Ye-Ting/email-flow,johndavidsparrow/grunt-email-workflow,rightscale-design/grunt-email-workflow,vukanac/grunt-email-workflow,iamchathu/grunt-email-workflow,brightbytes/email-templater,porkepic/ccube-email-templates,Ye-Ting/email-flow,Mizpah/NSTransEmails,porkepic/ccube-email-templates,serjiosilent/grunt-email-design,kuzin/EmailGen,Mizpah/NSTransEmails,jasonmelgoza/grunt-email-design,rightscale-design/grunt-email-workflow,taeo/grunt-email-design,andrebellafronte/grunt-email-workflow,kuzin/EmailGen,jasonmelgoza/grunt-email-design,leemunroe/grunt-email-workflow,johndavidsparrow/grunt-email-workflow,Xerasset/grunt-email-code,19peaches/grunt-email-workflow,taeo/grunt-email-design,iamchathu/grunt-email-workflow,leemunroe/grunt-email-workflow,Xerasset/grunt-email-code,juliusakula/grunt-email-workflow,LucasKA/mail-builder,juliusakula/grunt-email-workflow,serjiosilent/grunt-email-design,vukanac/grunt-email-workflow,brightbytes/email-templater