message: Fix tsconfig on eject creates a tsconfig.base.json and extends that one in user's tsconfig.json
diff: @@ -97,6 +97,16 @@ inquirer
  folders.forEach(verifyAbsent);
  files.forEach(verifyAbsent);
  + console.log();
  + console.log(cyan(`Copying base tsconfig into ${appPath}, and adjusting tsconfig.json`));
  +
  + fs.copyFileSync(path.join(ownPath, 'tsconfig.json'), path.join(appPath, 'tsconfig.base.json'))
  + const userTsConfig = path.join(appPath, 'tsconfig.json');
  + if (fs.existsSync(userTsConfig)) {
  + const configContent = fs.readFileSync(userTsConfig, 'utf8');
  + fs.writeFileSync(userTsConfig, configContent.replace('./node_modules/stylable-scripts/tsconfig.json', './tsconfig.base.json'));
  + }
  +
  console.log();
  console.log(cyan(`Copying files into ${appPath}`));
  