Add phinx and setting files.

Add "robmorgan/phinx" for migration.
add ignore dir
did path for vendor/bear/demo-apps
ResourceCacheModule is unavailable
chmod for writable file
Merge branch 'develop' of git://github.com/koriym/BEAR.DemoApps into develop

Conflicts:
	.gitignore
	Demo.Sandbox/bootstrap/autoload.php
Change migration setting file and directory.

Move to "{application_directory}/var/db/phinx/".
Merge pull request #1 from zukimochi/feature/start-migration

add migration tool
Create README.md
Update README.md
add psr4 autoload
remove actual file of index.php
constants for new StandardPackageModule
fix instance patth
fix standard module params
add error handler
Update gitignore (vendor)
Fix typo (Sandbox blog posts)
add api context
fix db path for test