Add configuration settings for IIS (Windows)

[AngeloAnolin]

Added web.config settings for those who would be using Internet Information Services (IIS) to host their VueJS app with Vue Router in History mode.

[posva]

I've never IIS so I can't really review this but it looks good to me to have more server configs

[josemadriz]

IIS setting should be.

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <system.webServer>
    <rewrite>
      <rules>
        <rule name="Handle History Mode and custom 404/500" stopProcessing="true">
            <match url="(.*)" />
            <conditions logicalGrouping="MatchAll">
              <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
              <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
            </conditions>
          <action type="Rewrite" url="index.html" />
        </rule>
      </rules>
    </rewrite>
  </system.webServer>
</configuration>

as described here note that the difference is that index.html is determined as default page.
In case the application is served from a subdirectory
https://www.linkedin.com/pulse/hosting-vue-js-spa-build-microsoft-iis-zainul-zain/
for the application to work on IIS.