added AnchoredDumper
added to jinja load* filters and tags
added doc for yaml / json tags
try to fix travis exception
removed anchored yaml, does not work with CDumper...
finished cleanup
make it works for python 2.6
Merge pull request #6247 from terminalmage/docs

Improve walkthrough
Merge pull request #6233 from johnnoone/jinja-import-yaml

Jinja import yaml
Add example of watch requisite