Move home page to correct location and rename to index.html

git-svn-id: https://svn.apache.org/repos/asf/jakarta/taglibs/proper/rdc/trunk@733364 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/xml/intro.xml b/src/site/xdoc/index.html
similarity index 100%
rename from xml/intro.xml
rename to src/site/xdoc/index.html