title: 'tsc' is not recognized as an internal or external command
body: <p>C:\Users\Raya Bhattacharjee\Desktop\Variables>npm install tsc --save
  npm WARN deprecated tsc@1.20150623.0: You probably meant to instally 'typescript'. Run 'npm install typescript -g'
  npm WARN saveError ENOENT: no such file or directory, open 'C:\Users\Raya Bhattacharjee\Desktop\Variables\package.json'
  npm notice created a lockfile as package-lock.json. You should commit this file.
  npm WARN enoent ENOENT: no such file or directory, open 'C:\Users\Raya Bhattacharjee\Desktop\Variables\package.json'
  npm WARN Variables No description
  npm WARN Variables No repository field.
  npm WARN Variables No README data
  npm WARN Variables No license field.</p>
  
  <ul>
  <li>tsc@1.20150623.0
  added 1 package in 1.269s</li>
  </ul>
  
  <p>C:\Users\Raya Bhattacharjee\Desktop\Variables>tsc variables.ts
  'tsc' is not recognized as an internal or external command,
  operable program or batch file</p>