added coveralls optional dependency
added coveralls optional dependency

bsmr-x-script/Haraka,fatalbanana/Haraka,Dexus/Haraka,typingArtist/Haraka,jjz/Haraka,haraka/Haraka,danucalovj/Haraka,hiteshjoshi/my-haraka-config,smfreegard/Haraka,hatsebutz/Haraka,baudehlo/Haraka,craigslist/Haraka,msimerson/Haraka,jjz/Haraka,craigslist/Haraka,zombified/Haraka,smfreegard/Haraka,niteoweb/Haraka,jjz/Haraka,msimerson/Haraka,DarkSorrow/Haraka,AbhilashSrivastava/haraka_sniffer,AbhilashSrivastava/haraka_sniffer,jaredj/Haraka,slattery/Haraka,hiteshjoshi/my-haraka-config,hiteshjoshi/my-haraka-config,bsmr-x-script/Haraka,MignonCornet/Haraka,typingArtist/Haraka,Dexus/Haraka,jjz/Haraka,fatalbanana/Haraka,fatalbanana/Haraka,msimerson/Haraka,DarkSorrow/Haraka,bsmr-x-script/Haraka,jaredj/Haraka,AbhilashSrivastava/haraka_sniffer,slattery/Haraka,craigslist/Haraka,slattery/Haraka,danucalovj/Haraka,hatsebutz/Haraka,smfreegard/Haraka,typingArtist/Haraka,hatsebutz/Haraka,slattery/Haraka,jaredj/Haraka,zombified/Haraka,bsmr-x-script/Haraka,haraka/Haraka,MignonCornet/Haraka,Synchro/Haraka,danucalovj/Haraka,Synchro/Haraka,niteoweb/Haraka,danucalovj/Haraka,zombified/Haraka,zombified/Haraka,baudehlo/Haraka,Synchro/Haraka,Dexus/Haraka,MignonCornet/Haraka,baudehlo/Haraka,haraka/Haraka,craigslist/Haraka,jaredj/Haraka,MignonCornet/Haraka,typingArtist/Haraka,niteoweb/Haraka,DarkSorrow/Haraka,fatalbanana/Haraka,Synchro/Haraka,msimerson/Haraka,baudehlo/Haraka,Dexus/Haraka,hatsebutz/Haraka,AbhilashSrivastava/haraka_sniffer,haraka/Haraka,DarkSorrow/Haraka,smfreegard/Haraka