update the description about install section
update the usage section
backport GtkHTML 3.32.2 for GTK+ 2.10
bump up version to 0.4.0 for Windows build
update archive process for Windows build
use compiler flag check macro
add travis support
add sylpheed-plugin-factory as submodule
support git submodule
add branch configuration
use submodule
install sylpheed package
add script: section
use setup-travis.sh script
use readonly repository for submodule
use --enable-webkitgtk
update submodule
update submodule
use submodule m4 macro
show sylpheed-plugin-factory source directory