Added dotfiles checkout check

dotfiles.sh

@@ -6,28 +6,33 @@ read -e -p "Please paste a HTTPS link to your dotfiles repository (or press ente
 [[ -z $DOTFILES_URL ]] && DOTFILES_URL=https://github.com/fastai/dotfiles.git
 git clone --bare $DOTFILES_URL .cfg/
 config checkout
-config config --local status.showUntrackedFiles no
-if [[ -s ~/.vimrc ]]; then
-  git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
-  vim +PluginInstall +qall
-fi
-if [[ -f ~/.bashrc.local ]]; then
-  echo "source ~/.bashrc.local" >> ~/.bashrc
-fi
-if [[ -f ~/.bash_profile ]]; then
-  grep -q 'source ~/.bashrc' ~/.bash_profile 2>&1 || echo "source ~/.bashrc" >> ~/.bash_profile;
-else
-  echo "Creating '.bash_profile'..."
-  echo "source ~/.bashrc" >> ~/.bash_profile
-fi
-. ~/.bashrc
+# only continue if checkout had no errors
+if [[ $? = 0 ]]; then
+  config config --local status.showUntrackedFiles no
+  if [[ -s ~/.vimrc ]]; then
+    git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
+    vim +PluginInstall +qall
+  fi
+  if [[ -f ~/.bashrc.local ]]; then
+    echo "source ~/.bashrc.local" >> ~/.bashrc
+  fi
+  if [[ -f ~/.bash_profile ]]; then
+    grep -q 'source ~/.bashrc' ~/.bash_profile 2>&1 || echo "source ~/.bashrc" >> ~/.bash_profile;
+  else
+    echo "Creating '.bash_profile'..."
+    echo "source ~/.bashrc" >> ~/.bash_profile
+  fi
+  . ~/.bashrc
 
-[[ -z $NAME  ]] && read -e -p "Enter your name (for git configuration): " NAME
-[[ -z $EMAIL ]] && read -e -p "Enter your email (for git configuration): " EMAIL
-[[ $NAME  ]] && git config --global user.name "$NAME"
-[[ $EMAIL ]] && git config --global user.email "$EMAIL"
-git config --global credential.helper cache
-git config --global credential.helper 'cache --timeout=3600'
-
-cd -
+  [[ -z $NAME  ]] && read -e -p "Enter your name (for git configuration): " NAME
+  [[ -z $EMAIL ]] && read -e -p "Enter your email (for git configuration): " EMAIL
+  [[ $NAME  ]] && git config --global user.name "$NAME"
+  [[ $EMAIL ]] && git config --global user.email "$EMAIL"
+  git config --global credential.helper cache
+  git config --global credential.helper 'cache --timeout=3600'
 
+  cd -
+else
+  echo "Error with dotfiles checkout, see above and retry."
+  rm -rf .cfg/
+fi