task(travis) have travis execute gulp clean and build before calling gulp rpm
task(rpm) changes to the spec file to include the .tmp directory instead of the asset
task(rpm) chown the rnr_service directory itself
Merge branch 'develop' of https://github.com/lithiumtech/li-widgets into develop

* 'develop' of https://github.com/lithiumtech/li-widgets:
  fix(documentation): parameterize Url for swagger server
  docs(update) update main doc and folder structure
  docs(customization) add docs for customization
  fix(customization) add task to gulp commands doc; return the stream in the gulp task