update plugin loader to load modules from install directory's node_modules
update plugin loader to load modules from install directory's node_modules

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