Adding trace log

Author: andres-rojas

src/prettier/install.sh

@@ -28,6 +28,7 @@ if [ -n "${PRETTIER_PLUGINS}" ]; then
     IFS=','
 
     for plugin in $PRETTIER_PLUGINS; do
+        echo "Installing ${plugin}"
         if ! npm list ${plugin} > /dev/null; then
             npm install --save-dev prettier ${plugin}
         fi