Add zsh/oh my zsh/w10k

zsh/.oh-my-zsh/plugins/jenv/README.md

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+# jenv plugin
+
+[jenv](https://www.jenv.be/) is a Java version manager similiar to [rbenv](https://github.com/rbenv/rbenv)
+and [pyenv](https://github.com/yyuu/pyenv).
+
+This plugin initializes jenv and provides the `jenv_prompt_info` function to add Java
+version information to prompts.
+
+To use, add `jenv` to your plugins array in your zshrc file:
+
+```zsh
+plugins=(... jenv)
+```
+
+## Theme example
+
+You can modify your `$PROMPT` or `$RPROMPT` variables to run `jenv_prompt_info`.
+
+For example:
+```
+PROMPT="%~$ "
+RPROMPT='$(jenv_prompt_info)'
+```
+changes your prompt to:
+```
+~/java/project$ ▋                                       oracle64-1.6.0.39
+```

zsh/.oh-my-zsh/plugins/jenv/jenv.plugin.zsh

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+jenvdirs=("$HOME/.jenv" "/usr/local" "/usr/local/jenv" "/opt/jenv")
+
+FOUND_JENV=0
+for jenvdir in $jenvdirs; do
+    if [[ -d "${jenvdir}/bin" ]]; then
+        FOUND_JENV=1
+        break
+    fi
+done
+
+if [[ $FOUND_JENV -eq 0 ]]; then
+    if (( $+commands[brew] )) && jenvdir="$(brew --prefix jenv)"; then
+        [[ -d "${jenvdir}/bin" ]] && FOUND_JENV=1
+    fi
+fi
+
+if [[ $FOUND_JENV -eq 1 ]]; then
+    (( $+commands[jenv] )) || export PATH="${jenvdir}/bin:$PATH"
+    eval "$(jenv init - zsh)"
+
+    function jenv_prompt_info() { jenv version-name 2>/dev/null }
+
+    if [[ -d "${jenvdir}/versions" ]]; then
+        export JENV_ROOT=$jenvdir
+    fi
+else
+    function jenv_prompt_info() { echo "system: $(java -version 2>&1 | cut -f 2 -d ' ')" }
+fi
+
+unset jenvdir jenvdirs FOUND_JENV