Update repo for wp-dev-lib license addition

[ghost]

FYI xwp/wp-dev-lib#237

[ntwb]

It includes a license already https://github.com/gedex/wp-tools/blob/master/LICENSE

[ghost]

Okay, they added a copyleft license, which means their software can be used as long as it abides by the copyleft agreement. Here are the licensing terms and procedures needed to apply the license: https://github.com/xwp/wp-dev-lib/blob/master/LICENSE.txt

[ghost]

Here's a snippet shown on the licensing page regarding derived works:

When distributing derived works, the source code of the work must be made available under the same license. There are multiple variants of the GNU GPL, each with different requirements.

[ghost]

Requested wp-dev-lib maintainer relicense with justification provided here: xwp/wp-dev-lib#240 (comment)

[ghost]

FYI - https://hackernoon.com/introducing-the-btc-license-28650887eb11