Merge pull request #4402 from github/tomthorogood-patch-1

Create green-software collection

collections/green-software/index.md

@@ -0,0 +1,15 @@
+---
+items:
+ - Green-Software-Foundation/patterns
+ - kube-green/kube-green
+ - marmelab/greenframe-cli
+ - ThijsRay/coppers
+ 
+display_name: Green Software
+created_by: tomthorogood
+
+---
+
+This collection curates projects that exemplify or help to provide green computing.
+Green software is engineered to reduce energy consumption, which considers factors like algorithmic and language efficiency, networking, storage footprint, compute requirements, and so forth. 
+Some projects follow great green software practices that should be highlighted; others help the rest of the world greenify their own code. The projects collected here are a mix of both.