Added a ruby one liner example of how to start a web server to test AXEL w/o file system limitations.
Moved xtiger.util.Logger to forms.js; removed src/utils.js.
Added XTiger executive summary; Added self-describing template for "optional" filter; set max length to 150 characters in demonstration editor path input fields.
Added link to AXEL executive summary.
Merge branch 'master' into gh-pages