add doc

doc/themes/next/.gitignore

@@ -0,0 +1,19 @@
+.DS_Store
+.idea/
+*.log
+*.iml
+yarn.lock
+package-lock.json
+node_modules/
+
+# Ignore optional external libraries
+source/lib/*
+
+# Track internal libraries & Ignore unused verdors files
+source/lib/font-awesome/less/
+source/lib/font-awesome/scss/
+!source/lib/font-awesome/*
+
+!source/lib/jquery/
+
+!source/lib/velocity/