Add Apache software download acceleration support

Added Apache as a supported platform in the documentation and configuration. Updated both English and Chinese README files with instructions and examples for accelerating Apache software downloads via Xget, and registered the Apache platform in the platforms.js config.

src/config/platforms.js

@@ -16,6 +16,7 @@ export const PLATFORMS = {
   conda: 'https://repo.anaconda.com',
   'conda-community': 'https://conda.anaconda.org',
   maven: 'https://repo1.maven.org',
+  apache: 'https://downloads.apache.org',
   gradle: 'https://plugins.gradle.org',
   rubygems: 'https://rubygems.org',
   cran: 'https://cran.r-project.org',