Update to MIT license

[dhmlau]

Description

To help to continue growing the community, we decided to change the license of this module to MIT license.

The license used here is using https://github.com/strongloop/loopback-connector-mysql/blob/master/LICENSE as reference.

Changes involved in this PR:

• update LICENSE.md to MIT license
• update license and copyright.owner field, in package.json
• run slt copyright to update the copyright statement in the header of source code files.

Originated from https://github.com/strongloop-internal/scrum-apex/issues/382

[dhmlau]

@slnode test please

[virkt25]

If you look at the code files -- There are headers which still mention the old license. Can you please update those as well.

Example: /lib/migration.js

// Copyright IBM Corp. 2015. All Rights Reserved.
// Node module: loopback-connector-oracle
// US Government Users Restricted Rights - Use, duplication or disclosure
// restricted by GSA ADP Schedule Contract with IBM Corp.

[dhmlau]

Good catch! Let me run the strong tools and see whether it can update the header for us.

[dhmlau]

@slnode test please