add LockService
basic flow of lock complete
realize voice to password basically

1. make the LockActivity singleInstance
2. can do the voice authenticate for a while, and then change to
password authenticate.
3. if it has been the password view, after screen off and on, it will
change to voice authenticate.
set service foreground

this version will not show notification, later version maybe support the
settings which is decided by user
add login activity and xml files, add WorldModel.mdl
add LoginActivity

not support multi-users
edit EditText names
add user_manager
add TrainActivity, Config...etc
add jni support
can get feature
finish code for record

1. there's problem for start LockActivity
can run successfully

pre-commit error: audio format should be 16BIT
(don't know why 8BIT will cause error)
add progress bar

this version can run successfully, but the score is always between
-150.0 and -200.0, don't know whether it is right.
modify login activity
add ConfigActivity and change Button onClickListener
use new GetMfcc, but result is wrong
separate train gmm and test

1.can backup short and mfcc files
2.but the score isn't right
fix record crashed where screen off
add dialog support, but something is wrong