fix: show correct folder on app creation (#318)

Author: shaftoe

src/create-probot-app.ts

@@ -76,6 +76,11 @@ Try running ${bold("npm " + command)} yourself.
  const previousDir: string = process.cwd();
  process.chdir(destination);
 
+ const chdirAndResolve = (): void => {
+ process.chdir(previousDir);
+ resolve();
+ };
+
  npm.load(function (err) {
  if (err) reject(err);
 
@@ -89,9 +94,9 @@ Try running ${bold("npm " + command)} yourself.
  console.log(yellow("\n\nCompile application...\n"));
  npm.commands["run-script"](["build"], function (err) {
  if (err) reject(new NpmError("build application", "run build"));
- else resolve();
+ else chdirAndResolve();
  });
- } else resolve();
+ } else chdirAndResolve();
  });
  });
  });