rescue broken pipe during log output
rescue broken pipe during log output

allows interoperability with other tools, ie `heroku logs | head -n 1`
closes #176

Faisalawanisee/heroku,macedo/heroku,sancopanco/heroku,uhoh-itsmaciek/heroku,rkh/heroku,dickeyxxx/heroku,vcgato29/heroku,heroku/heroku,heroku/heroku,uhoh-itsmaciek/heroku,heroku/heroku,vcgato29/heroku,Faisalawanisee/heroku,vcgato29/heroku,macedo/heroku,sancopanco/heroku,dickeyxxx/heroku,Faisalawanisee/heroku,gregburek/heroku,macedo/heroku,duypq94/heroku,gregburek/heroku,greeca0204/heroku,duypq94/heroku,dickeyxxx/heroku,greeca0204/heroku,rkh/heroku,gregburek/heroku,sancopanco/heroku,duypq94/heroku,rkh/heroku,greeca0204/heroku