add jenv zsh config && fix vim zsh exception

vim/settings.vim

@@ -13,3 +13,6 @@ for fpath in split(globpath(vimsettings, '*.vim'), '\n')
 
   exe 'source' fpath
 endfor
+
+
+set shell=/usr/local/bin/zsh

zsh/jenv.zsh

@@ -0,0 +1,19 @@
+export PATH="/Users/czwu/.jenv/shims:${PATH}"
+source "/usr/local/Cellar/jenv/0.4.4/libexec/libexec/../completions/jenv.zsh"
+jenv rehash 2>/dev/null
+export JENV_LOADED=1
+unset JAVA_HOME
+jenv() {
+    typeset command
+    command="$1"
+    if [ "$#" -gt 0  ]; then
+      shift
+    fi
+
+    case "$command" in
+      enable-plugin|rehash|shell|shell-options)
+        eval `jenv "sh-$command" "$@"`;;
+      *)
+        command jenv "$command" "$@";;
+    esac
+}