Implement 'manip' API
Add a tester HTML for 'manip' API
Add install subcommand in server.py to download jQuery
Implement pipe API
Fix to use POST in HTTP
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 remote-tracking branch 'kenbeese/DataProcessorServer' into API_manip

Conflicts:
	.gitignore
Add error check
Write documents
Merge branch 'DataProcessorServer' into API_pipe

Conflicts:
	.gitignore
Add a method `get(name)` in handler.Request
Merge branch 'API_manip' into API_pipe
Add more comment
Fix error check
Write short docstrings