bump to 0.1.1
fix up the broken reference cross documents.
resolve the warning information of sphinx.
add example for etree pipeline property usage.
simplify the example of etree property and add example of xpath property.
add example and more description to url query property.
add example for text response property and allow passing keyword arguments.
add description for wrong usage of site.route
add declarative demo.
Merge branch 'hotfix/0.1.1' into develop