Merge pull request #30 from vidkun/master

resolved missing highline/import
Switch to using XPath.first method
Merges in credentials branch.
Adds missing "end" from bad merge.
Captures request and response XML on requests for debugging.
Version 0.1.10 of gem to capture recent changes.
Added xml escapes to name and fullname of user to_xml
Version 0.1.11 to include XML protections.
Ad hoc XML reports now return text even if image is first part of MIME.
Push ad hoc report fix for XML reports.
Adds save method for AssetGroup.
Adds script for creating asset groups from file.
Pushes AssetGroup save and script.
Fixes Alert configuration for sites.
Pushing Alert changes.
Adds additional debugging to script.
Gets full details for vulnerabilities, and as objects.
Improved performance on assets call.
XML clean-up
Adds Scope module for constants.