Add in autoenv from @kennethreitz

plugins/available/z_autoenv.plugins.bash

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+echo "hi from autoenv"
+if [[ -n "${ZSH_VERSION}" ]]
+then __array_offset=0
+else __array_offset=1
+fi
+
+autoenv_init()
+{
+  typeset target home _file
+  typeset -a _files
+  target=$1
+  home="$(dirname $HOME)"
+
+  _files=( $(
+    while [[ "$PWD" != "/" && "$PWD" != "$home" ]]
+    do
+      _file="$PWD/.env"
+      if [[ -e "${_file}" ]]
+      then echo "${_file}"
+      fi
+      builtin cd ..
+    done
+  ) )
+
+  _file=${#_files[@]}
+  while (( _file > 0 ))
+  do
+    source "${_files[_file-__array_offset]}"
+    : $(( _file -= 1 ))
+  done
+}
+
+cd()
+{
+  if builtin cd "$@"
+  then
+    echo "running autoenv_init"
+    autoenv_init
+    return 0
+  else
+    echo "else?"
+    return $?
+  fi
+}
+echo "cd has been replaced"