readme update

README.md

@@ -6,6 +6,7 @@ This project is a collection of TypeScript math helpers and utilities for the br
 - [TypeScript Usage](#typescript-usage)
 - [Browser Usage](#browser-usage)
 - [Node.js Usage](#nodejs-usage)
+- [License](#license)
 - [Vectors](#vectors)
     - [Vectors Sum](#vectors-sum)
     - [Vectors Subtraction](#vectors-subtraction)
@@ -91,7 +92,6 @@ This project is a collection of TypeScript math helpers and utilities for the br
   - [Convert range](#convert-range)
   - [Do ranges overlap?](#check-if-two-ranges-overlap)
   - [Can be converted to number?](#check-if-value-can-be-converted-to-number)
-- [License](#license)
 
 ## TypeScript Usage
 
@@ -3124,6 +3124,17 @@ const res = isNumber(Infinity); // false
 -----------------------------------------------
 
 ## License
-[MIT license](https://github.com/mzusin/mz-math/blob/main/LICENSE)
 
-It can be used **for free** in any personal or commercial project :gift: 
+The project has two types of licenses: open-source and commercial. In general, the project is free for non-commercial, trial and educational use, and paid for commercial use.
+
+## Open source license
+
+The open source license can be used to create open source, trial and personal projects. The project uses the [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html) open source license.
+
+Please note that releasing your application that uses this project under the [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html) license, in turn, requires your application to be licensed under the GPLv3 license.
+
+## Commercial license
+
+The commercial license should be used to create commercial products and applications, without the provisions of the [GPLv3](https://www.gnu.org/licenses/gpl-3.0.html) license. With the commercial license, your code is kept proprietary, to yourself. If you want to use this project to develop commercial websites, themes, projects, and applications, the commercial license is the way to go.
+
+[Read more about commercial license](https://github.com/mzusin/index/blob/main/License.md)