Init sinatra project.
Add rack script.
Merge pull request #2 from 3sword/setup-sinatra

Setup sinatra
setup activerecord
write readme
Merge branch 'setup-sinatra' into setup
update gitignore
move db file location
Add login backend.
protect route by authentication
add two users
Add daily_report model.
Rename model to models
compose daily_report model.
Finish index.html template.
Add angularJS.
Setup angularJS. Setup tryLogin();
Formatting.
Fix json post problem.