New wdd_html_manifest with CSS selectors

Other changes:
 * wdd_meta_names refactored to use CSS selector
 * change ernesto-jimenez => webdevdata
README pointing to github.com/webdevdata
Restoring README content accidentally deleted
Fixed readme
Merge pull request #1 from Webdevdata/feature/filter_tags_with_CSS_selector

Using CSS selectors to filter tags and added new tool