Merge pull request #21 from kouyaf77/fix_design

Fixed Top page
refactoring a bit
fix comment
Merge pull request #22 from huydx/feature/client

refactoring a bit
question page / first commit with temp css
answer page
fix bug not display slide at streaming page
Update README.md
Created Subscriber class
Created function of streaming page
Saveed drawing line in a silde
Created url for subscribe
Refactored a bit
Fixed bug for confilct
Fixed style
Merge pull request #24 from kouyaf77/create_pc_client

Create pc client
Merge pull request #23 from huydx/feature/question_page

Feature/question page
change gui
change gui
question function for client view + search feature + refactoring client view