Change license to Apache 2.0 from LGPL and release new version 3.0.0

[wnm3]

• [ x ] Create a new version 3.0.0 of the software (saving the current version 2.0.1 as LGPL)
• [ x ] Update all headers with the Apache 2.0 License verbiage
• [ x ] Update the LICENSE.TXT file with the Apache 2.0 License
• [ x ] Add to the README.md that version 3.0.0 is now under the Apache 2.0 License and version 2.0.1 remains under LGPL.
• [ x ] Check in all code and release the jar file to Maven Central as version 3.0.0

Also, change the ESCAPE_SOLIDUS from true to false to make the JSON more friendly for URLs to remain as is.