Add zsh/oh my zsh/w10k

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

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+## asdf
+
+**Maintainer:** [@RobLoach](https://github.com/RobLoach)
+
+Adds integration with [asdf](https://github.com/asdf-vm/asdf), the extendable version manager, with support for Ruby, Node.js, Elixir, Erlang and more.
+
+### Installation
+
+1. Enable the plugin by adding it to your `plugins` definition in `~/.zshrc`.
+
+  ```
+  plugins=(asdf)
+  ```
+
+2. [Install asdf](https://github.com/asdf-vm/asdf#setup) by running the following:
+  ```
+  git clone https://github.com/asdf-vm/asdf.git ~/.asdf
+  ```
+
+### Usage
+
+See the [asdf usage documentation](https://github.com/asdf-vm/asdf#usage) for information on how to use asdf:
+
+```
+asdf plugin-add nodejs git@github.com:asdf-vm/asdf-nodejs.git
+asdf install nodejs 5.9.1
+```

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

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+# Find where asdf should be installed
+ASDF_DIR="${ASDF_DIR:-$HOME/.asdf}"
+ASDF_COMPLETIONS="$ASDF_DIR/completions"
+
+# If not found, check for Homebrew package
+if [[ ! -f "$ASDF_DIR/asdf.sh" ]] && (( $+commands[brew] )); then
+   ASDF_DIR="$(brew --prefix asdf)"
+   ASDF_COMPLETIONS="$ASDF_DIR/etc/bash_completion.d"
+fi
+
+# Load command
+if [[ -f "$ASDF_DIR/asdf.sh" ]]; then
+    . "$ASDF_DIR/asdf.sh"
+
+    # Load completions
+    if [[ -f "$ASDF_COMPLETIONS/asdf.bash" ]]; then
+        . "$ASDF_COMPLETIONS/asdf.bash"
+    fi
+fi