Add configure.py
Add sample usage.
Merge branch 'develop' into sample-dir
Bug fixed.
Add sample for generating html file.
Add dataprocessor.node
Remove unused files.
Add doctest for node.get
Remove pipes which does not support new node_list format.
Add node.validate_link
Add node.add
Bug fix
Fix doctest
Add coding statement.
Merge pull request #15 from kenbeese/sample-dir

Add sample directory
Implement nodes.remove
Change to use path in nodes.remove
Merge pull request #17 from termoshtt/nodes

Nodes
Skip duplicate node.
Compliment parents and chilren list of origin node_list.