cleanup install script and add asdf

install.sh

@@ -1,5 +1,6 @@
 #!/bin/bash
 
+if [ ! -x "$(command -v git)" ]; then 
   echo "Installing xcode commandline tools..."
   sudo xcode-select --install
   # Mojave fix
@@ -7,15 +8,32 @@ sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_heade
 
   echo "Installing homebrew..."
   /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
+else
+  echo "Homebrew already installed."
+fi 
 
+if [ ! -d ~/.oh-my-zsh ]; then
   echo "Installing oh-my-zsh..."
   git clone https://github.com/robbyrussell/oh-my-zsh.git ~/.oh-my-zsh
-chsh -s /bin/sh
+  chsh -s /bin/zsh
+else
+  echo "Oh-My-Zsh already installed."
+fi 
 
+if [ ! -d ~/.homesick ]; then
   echo "Installing homesick..."
   sudo gem install homesick
   homesick clone git@github.com:walkah/dotfiles.git
   homesick symlink -f
+else
+  echo "Homesick already installed."
+fi
+
+if [ ! -d ~/.asdf ]; then 
+  git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.6.0
+else 
+  echo "asdf already installed."
+fi
 
 echo "Initial brew bundle..."
 brew bundle --global