Migrate to ARC

Project migrate to ARC
Modify .gitignore and check the branch.

Modify .gitignore and check the branch.
Test the migrateToARC branch.

Test the migrateToARC branch.
Modified main.m

Modified main.m
Test

Test
Add mark-file for MigrateToARC branch

Add mark-file for MigrateToARC branch