Update license information

README.md

@@ -47,4 +47,27 @@ The actual source files of a software project are usually stored inside the `src
 
 ### License information
 
-...
+If you want to share your work with others, please consider choosing an open
+source license and include the text of the license into your project.
+The text of a license is usually stored in the `LICENSE` (or `LICENSE.txt`,
+`LICENSE.md`) file in the root of the project.
+
+> You’re under no obligation to choose a license and it’s your right not to
+> include one with your code or project. But please note that opting out of
+> open source licenses doesn’t mean you’re opting out of copyright law.
+> 
+> You’ll have to check with your own legal counsel regarding your particular
+> project, but generally speaking, the absence of a license means that default
+> copyright laws apply. This means that you retain all rights to your source
+> code and that nobody else may reproduce, distribute, or create derivative
+> works from your work. This might not be what you intend.
+>
+> Even in the absence of a license file, you may grant some rights in cases
+> where you publish your source code to a site that requires accepting terms
+> of service. For example, if you publish your source code in a public
+> repository on GitHub, you have accepted the [Terms of Service](https://help.github.com/articles/github-terms-of-service)
+> which do allow other GitHub users some rights. Specifically, you allow others
+> to view and fork your repository.
+
+For more info on how to choose a license for an open source project, please
+refer to http://choosealicense.com