Cannot find Bootstrap.groovy or Datasource.groovy files in grails project
<p>I'm doing <a href="https://grails.org/wiki/Quick%20Start" rel="nofollow">this</a> tutorial. It says <code>the Grails BootStrap class, which you can find in grails-app/conf/BootStrap.groovy</code></p>

<p>But alas, it is not there:</p>

<pre><code>./grails-app
+--conf
|    +--spring/
|    +--application.yml
|    +--logback.groovy
</code></pre>

<p>The tutorial also says <code>all new Grails applications include the file grails-app/conf/DataSource.groovy</code>. But alas, this is not true either.</p>

<p>If I create the files manually, they do not actually do anything. I am using Grails v3.1.10, Groovy v2.4.7, and JVM v1.7.0_101. Please help.</p>