Readme changes and added contributing information

CONTRIBUTING.md

@@ -0,0 +1,24 @@
+## How to contribute to Adalanche Open Source
+
+#### **Did you find a bug?**
+
+* **Ensure the bug was not already reported** by searching on GitHub under [Issues](https://github.com/lkarlslund/Adalanche/issues).
+
+* If you're unable to find an open issue addressing the problem, [open a new one](https://github.com/lkarlslund/Adalanche/issues/new). Be sure to include a **title and clear description**, as much relevant information as possible, log output or a screenshot.
+
+#### **Pull Requests**
+
+* We do currently not accept pull requests, primarily because Adalanche is dual licensed as AGPL and a proprietary commercial license. This requires that the entire source code (excluding permissive submodules) to be owned by us.
+
+* If you've made a substantial improvement, and want to donate the ownership of the source code to us, please reach out.
+
+#### **How can I help?**
+
+* Provide feedback - positive or negative - via Twitter to [@lkarlslund](https://twitter.com/lkarlslund)
+
+* If you feel that Adalanche brings value, consider buying one of the commercial editions from [NetSection](https://www.netsection.com). The commercial editions ensure that the open source edition of Adalanche will continue development.
+
+
+Thanks! :heart:
+
+Lars Karlslund

readme.MD

@@ -1,4 +1,4 @@
-# <img src="modules/analyze/html/icons/adalanche-logo-black.svg#gh-light-mode-only" height="28px"><img src="modules/analyze/html/icons/adalanche-logo.svg#gh-dark-mode-only" height="28px"> Adalanche
+# <img src="modules/analyze/html/icons/adalanche-logo-black.svg#gh-light-mode-only" height="28px"><img src="modules/analyze/html/icons/adalanche-logo.svg#gh-dark-mode-only" height="28px"> Adalanche Open Source
 
 *Active Directory ACL Visualizer and Explorer*
 
@@ -332,6 +332,10 @@ To everyone messing around with Active Directory - the team behind BloodHound, W
 
 If you need inspiration on how to use a detected attack path I can highly recommend that you take a look at [PayloadsAllTheThings Active Directory section](https://github.com/swisskyrepo/PayloadsAllTheThings/blob/master/Methodology%20and%20Resources/Active%20Directory%20Attack.md)
 
+## Commercial Editions
+
+Different commercial editions with improved functionality are available for purchase from [NetSection](https://www.netsection.com).
+
 ## Happy hunting!
 
 Feedback is welcome -> [@lkarlslund](https://twitter.com/lkarlslund)