adjusted gemspec to export new assets folder

Author: jonasjabari

matestack-ui-bootstrap.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.description = "Bootstrap v5 components for Matestack UI"
   spec.license     = "MIT"
 
-  spec.files = Dir["{app,config,db,lib}/**/*", "LICENSE", "Rakefile", "README.md"]
+  spec.files = Dir["{app,config,db,lib,assets}/**/*", "LICENSE", "Rakefile", "README.md"]
 
   spec.add_dependency "matestack-ui-core", "~> 3.0.0"
   spec.add_dependency "matestack-ui-vuejs", "~> 3.1.0"