fix(cli): pipe content to the cli from cat it is a stream

Author: dignifiedquire

src/cli/commands/files/cat.js

@@ -23,10 +23,12 @@ module.exports = {
           if (err) {
             throw err
           }
-          console.log(res.toString())
+
+          res.pipe(process.stdout)
         })
         return
       }
+
       ipfs.files.cat(path, (err, file) => {
         if (err) {
           throw (err)

test/cli/test-files.js

@@ -80,6 +80,7 @@ describe('files', () => {
         .run((err, stdout, exitcode) => {
           expect(err).to.not.exist
           expect(exitcode).to.equal(0)
+          expect(stdout[0]).to.equal('hello world')
           done()
         })
     })