Merge "docs: Added warning to versioning.html." into mnc-docs

strong resemblance to the application release version that is visible to the

user (see <code>android:versionName</code>, below). Applications and publishing

services should not display this version value to users.</p>

<p class="warning">

    <strong>Warning:</strong> The greatest possible value for <code>

    android:versionCode</code> is <code>MAXINT</code> (2147483647). However, if

    you upload an app with this value, your app can't ever be updated.

</p>

</li>

<li><code>android:versionName</code> &mdash; A string value that represents the

release version of the application code, as it should be shown to users.