Merge pull request #3 from plng322/master

first commit for readme
Add show pay detail view
Add show budget detail function
update index view summary date automatically
Bug fix: reload data after new tab bar selected
reload table view data when navigation back
promote user experience
update read me
update table view constraint in setting view to fit iphone4s
update index view constraint to fit iphone4s
remove all pictures from project
add index pictures
update index text field constant
Fix bugs: Swift not support well the function name like initXXX
add color scheme
Set icons and application name
add icons
Check user input before save
修改了提交反馈