Update method modified.
key attributes will check and alter.
only last attribute added in the database and break, but now any places can be add attributes
add .gitignore as this is public repository.
migration xml updated but very minor changes, can be ignore
suggestions: as in php isn't data type dependent, so arr, str before variable isn't a good idea if we check php standard coding convention
removed die
removed die
Merge remote-tracking branch 'remotes/upstream/master'

Conflicts:
	migration.php
	schema/migration.xml
Merge pull request #1 from sas05/master

Update method modified