multiple changes to vimrc
sundry changes to vimrc and zshrc

zsh changes:
  * Fixed suffix_aliases so that ./script.py or ./script.rb will execute
      the files rather than editing them
  * Quick function to determine whether a command is in your $PATH

vim changes:
  * pathogen should now only try to #infect if it's installed on the
      system
  * realized that <Leader>b was so slow because it's also the start of
      various vim-default commands and buffer-delete
added vim notes
resolved merging of server-based work and local work