Bug fixed.

In previous version, if path_expand get "~/hoge",
it return "/home/user/~/hoge".
Merge pull request #35 from kenbeese/bug-fixed-utility

Bug fixed.
Split error check of `manip` from execute.execute #36
Check keys in `mn`
Fix documents and refactor `run_list` > `node_list`
Modified docstring. #38
Merge pull request #37 from termoshtt/error_check_in_execute

Split error check of `manip` from execute.execute
Bug fix in io.py
Merge branch 'DataProcessorServer' into http_handler
Write typical usage
Merge remote-tracking branch 'kenbeese/master' into DataProcessorServer
Merge pull request #38 from termoshtt/http_handler

Add HTTP handler
Minor fixed.
Update build document.
Update document.
Using unittest in execute_all_test.
Remove etreeio.py
Merge branch 'master' into DataProcessorServer

Conflicts:
	bin/execute_all_test
Merge branch 'DataProcessorServer' into API_pipe

Conflicts:
	.gitignore