Installation test of XML and XPath; updated README.md
README.md
Updated README.md, refer to Cuis package list
minor formatting fix in README.md
Update README.md

Added note about XML parser version.
fixed two tests in XMLParserTests.pck.st; error messageText INSTEAD of error
Merge pull request #2 from hhzl/master

fixed two tests in XMLParserTests; updated README.md