DOC add developer guideline document
DOC add development guidelines document
DOC fix code insertion bug
DOC fix bug in devguide.rst
DOC fix bug in devguide.rst
DOC finish development guidelines
DOC fix bugs in devguide.rst
DOC finish development guidelines
DOC remove test.rst in development document
DOC add architecture document
[DOC] finish architecture.rst
[DOC] edit architecture.rst
[DOC] edit architecture.rst
Merge pull request #32 from sealhuang/write-development-doc

Development document initialization.
Merge pull request #33 from zhouguangfu/master

Change the UI, add the tabwidget control to make the UI brief .
extract icon_dir to be a separate file
separate icon_dir to a new file
Merge branch 'extract_icon_dir_file' of https://github.com/liuzhaoguo/FreeROI
add utils.py and make the code to be more clear
change a wrong else in utils.py