Listening/Writing schema
new line at EOF
merge some audios, simplify schema
Spkeaing question type is implied by order. Simplify schema
Merge pull request #8 from charliezhang/master

Speaking/Writing schema
add some static files
add some static files
Merge branch 'master' of https://github.com/charliezhang/gf2
Make files under web/app/out as the root to users.
Merge pull request #11 from niczy/master

Make files under web/app/out exposed as root dir.
add some static files
Merge branch 'master' of https://github.com/charliezhang/gf2
Merge pull request #10 from charliezhang/master

add some static files