vimrc: speedify; zshrc: uninstalled homebrew emacs

zshrc

@@ -38,7 +38,7 @@ export CARP_DIR=$GH_HOME/carp/Carp/
 export EDITOR=/usr/local/bin/vim
 alias dob="git branch --merged | grep -vE '(\*)|(master)|(dev)' | xargs -n 1 git branch -d"
 alias vi="stty stop '' -ixoff ; stty erase '^?'; vim"
-alias em="/usr/local/bin/emacs"
+alias em="emacs"
 alias mk="make"
 alias g="git"
 alias virtualenv2="python2.7 /usr/local/lib/python2.7/site-packages/virtualenv.py"