initial tweaks for Mac compatibility
mac tweaks + screenrc file
added vim editorconfig plugin, tweaked some aliases
added irssi config and cloned down @pbrisban's setup-- it's pretty awesome.

still need to configure / figure out how bitlbee works. Also, commented out
RUBYOPTS
pulling ssh config from the repo because I want to put secret stuff in it
new nt version
forwarding master ahead for merge
irssi cleanup
Merge branch 'mac'

mac config is nice and cleaned up now (at least more than it was) and a lot of
the mac-specific config is now generalized. merging in for now
hopefully the last commit ever to deal with bundle submodules?