cleaned up unnecessary files
- fixed the indentation in README.md
- removed the duplicate manifest.webapp
- removed the scripts property in package.js and removed server/index.js
  as the client app is not to be deployed
Merge pull request #78 from dhfromkorea/dev

cleaned up unnecessary files - fixed the indentation in README.md - removed the duplicate manifest.webapp - removed the scripts property in package.js and removed server/index.js   as the client app is not to be deployed