ISTWCMS-3759: updating build gesso script to move packages and gulpfile

build_gesso.sh

@@ -4,7 +4,17 @@ git clone "https://github.com/forumone/gesso" "gesso"
 cd gesso
 git checkout $gesso_version
 cd ..
-ln -s "source" "gesso/source"
+
+if [ -f "gulpfile.js" ]; then
+  mv gulpfile.js gesso
+fi
+
+if [ -f "packages.json" ]; then
+  mv packages.json gesso
+fi
+
+ln -s "gesso/source" "source"
+
 echo "Removing Gesso files"
 rm gesso.layouts.yml
 rm gesso.info.yml
@@ -16,6 +26,7 @@ rm -rf templates
 echo "Done removing gesso theme files."
 
 echo "Running npm install ..."
+cd gesso
 npm install
 echo "Done npm install."