updated unsigned primary keys / unique name for keys (Alan Lobo)

http://www.yiiframework.com/extension/database-command/#c11205
updated generated code order (1.truncate), 2.schema, 3.foreign-keys, 4.inserts (le_top)

http://www.yiiframework.com/extension/database-command/#c11253
updated docs
Update CHANGELOG.md
fixed missing insert code
Updated extension to support migrationsPath configuration
Merge pull request #8 from cajoy/master

Updated extension to support migrationsPath configuration
updated CHANGELOG (0.8.7)
fixed insert creation, removed obsolete check