update readme prior to release

selectXPathInDocument did not scroll to the selection - now fixed

fix xpath variables setting command

update release number

last fix cause problem with next attr name - use avtExit instad to fi…

…x string token start

fix for #73: Spurioius 'Invalid Name' problem reported in XPath for @…

…*:data

syntax highlighting: change attributeNameTest from 'storage.type' to …

…'variable.parameter'

update package version to 0.2.9

change product version to 0.2.8

strip fn: prefix from function name for hover provider