Add resiliancy, and update local repos if run again

initialize_environment.sh

@@ -1,14 +1,24 @@
 #!/bin/bash
 
+function update_or_clone {
+  dir=`basename $1 | awk -F. '{print $1}'`
+  directory=${2:-$dir}
+  if [ -d $directory ]; then
+    cd $directory
+    git pull
+    cd ..
+  else
+    git clone --depth=1 $1 $directory
+  fi
+}
+
 [ -e $HOME/.vimrc ] && rm $HOME/.vimrc
 ln -s $(pwd)/vimrc $HOME/.vimrc
 
 mkdir -p $HOME/.vim/autoload $HOME/.vim/bundle
 curl -LSso $HOME/.vim/autoload/pathogen.vim https://tpo.pe/pathogen.vim
 
-MODULES="git://github.com/altercation/vim-colors-solarized.git
-	https://github.com/sheerun/vim-wombat-scheme.git
-	git://github.com/tpope/vim-fugitive.git
+MODULES="git://github.com/tpope/vim-fugitive.git
 	git://github.com/tpope/vim-git.git
 	https://github.com/tpope/vim-sensible.git
 	https://github.com/rust-lang/rust.vim.git
@@ -19,16 +29,24 @@ MODULES="git://github.com/altercation/vim-colors-solarized.git
 	https://github.com/pangloss/vim-javascript
 	https://github.com/tpope/vim-surround
 	https://github.com/scrooloose/syntastic
+	https://github.com/Marfisc/vorange.git
+	https://github.com/sjl/badwolf.git
+	https://github.com/YorickPeterse/happy_hacking.vim.git
+	https://github.com/owickstrom/vim-colors-paramount.git
+	https://github.com/pbrisbin/vim-colors-off.git
+	https://github.com/kristijanhusak/vim-hybrid-material.git
 	https://github.com/dsolstad/vim-wombat256i.git
-	https://github.com/jnurmine/Zenburn.git"
+	https://github.com/jnurmine/Zenburn.git
+	git://github.com/altercation/vim-colors-solarized.git
+	https://github.com/sheerun/vim-wombat-scheme.git"
 
 cd $HOME/.vim/bundle
 for module in $MODULES; do
-	git clone --depth=1 $module
+  update_or_clone $module
 done
 
 mkdir -p $HOME/.zsh
 cd $HOME/.zsh
 
-git clone --depth=1 https://github.com/robbyrussell/oh-my-zsh.git
-git clone https://github.com/nichus/zsh-customizations custom
+update_or_clone https://github.com/robbyrussell/oh-my-zsh.git
+update_or_clone https://github.com/nichus/zsh-customizations custom